Abstract:
The present invention relates to a retaining wall planter block that is resistant to damage and wear caused by the environment in which it is placed, but also accommodates the growth of desired vegetation. The planter block contains a fill material that is conducive to vegetation growth, and has apertures for the emerging vegetation. The deterioration resistant planter block is generally a hollowed frame or shell of a deterioration resistant material that is light-weight and is configured to accept and retain any type of organic filling material and seeds. The filling material provides weight and stability to the retaining wall planter block and also provides weight, stability and security to a retaining wall constructed of such planter blocks, as well as suitable growth medium for the vegetation.

Description:
[0001]    The present invention relates to a retaining wall planter block that is resistant to damage and wear caused by the environment it is placed into. The deterioration resistant block is generally a hollowed frame or shell of a deterioration resistant material that is light-weight, includes a plurality of apertures and is configured to accept one or more fill materials that may include seeds. Generally, at least one of the fill materials is suitable for growth of vegetation that protrudes through the plurality of apertures positioned on the block. The filling material also provides weight and stability to the retaining wall planter block and also provides weight, stability and security to a retaining wall constructed of such blocks.  
         BACKGROUND OF THE INVENTION  
         [0002]    The use of retaining walls to protect and beatify property in all types of environmental settings is a common practice in the landscaping, construction and environmental protection fields. Walls constructed from various materials are used to outline sections of property for particular uses, such as gardens or flower beds, fencing in property lines, reduction of erosion, and to simply beautify areas of a property.  
           [0003]    Numerous methods and materials exist for the construction of retaining walls. Such methods include the use of natural stone, poured in place concrete, masonry, landscape timbers or railroad ties. In recent years, segmental concrete retaining wall units, sometimes known as keystones, which are dry stacked (i.e., built without the use of mortar), have become a widely accepted product for the construction of retaining walls. Examples of such units are described in U.S. Pat. No. RE 34,314 (Forsberg) and in U.S. Pat. No. 5,294,216 (Sievert).  
           [0004]    However, many of the materials utilized in the construction of retaining walls are susceptible to deterioration and/or are not very aesthetically appealing. The ability of these retaining walls to withstand sunlight, wind, water, general erosion and other environmental elements is a problem with most retaining wall products. Many materials utilized in retention of shorelines are subject to immediate deterioration and/or are not as aesthetically appealing as one would desire.  
           [0005]    Furthermore, many materials utilized on shoreline structures are difficult to maintain due to the awkward location in the water and also the prevalent growth and presence of undesirable organic materials that can get caught and flourish in such a structure. For example, many lakeshore or ocean side properties utilize riprap as a retention device for prevention of erosion. Riprap is a configuration of large to medium size stones placed along the shoreline. A problem with waterfront properties that use a continuous wall of typical riprap is the shoreline will retain some undesirable organic material or will accumulate additional organic material brought in by the water. This usually leads to an unmanageable and aesthetically displeasing shoreline or higher maintenance. Furthermore, the riprap is never uniform in color and size and therefore does not as provide the most aesthetically pleasing shoreline or complete coverage of the shoreline. The lack of uniform shoreline coverage allows for some erosion, collection of various materials and the growth of undesirable weeds.  
           [0006]    As previously suggested, a particular concern is the utilization of erosion protection materials in water shorelines. Installing riprap, seawalls, or other structures result in the “Hardening” of the shoreline. This can lead to the disruption of spawning areas, increases erosion in non-protected shoreline, and destroys the natural habitat required by a variety of organisms. Alternatively, leaving the shoreline natural can lead to erosion, cause an unmanageable and unusable shoreline, create high maintenance, and inhibit an aesthetically pleasing property.  
           [0007]    Another problem with materials normally utilized in the construction of retaining walls, such as poured in place concrete, masonry, landscape timbers, railroad ties or keystones is that regulations in most states and counties prohibit their use in or near bodies of water because of the crumbling or deterioration of the material into the body of water over time. Many of these retaining wall materials dissolve, crumble, break apart and/or float into the body of water for which they line causing problems with the shoreline and pollution of the water. For example, the average life of a concrete block or keystone in water is approximately a couple of years. A need exists for a retaining wall, which would be resistant to such deterioration. Additionally the removal of a natural habitat for growth of desirable organic materials, such as vegetation and organisms, by insertion of such retaining walls presents environmental problems.  
           [0008]    An additional concern that exists in the construction of retaining walls is the weight of the blocks or materials. Concrete blocks, large stones, timbers or keystones can be heavy to move into the wall location and maneuver when constructing the wall. Many locations for which retaining walls are constructed are positioned in awkward terrain. Heavy building materials are difficult to move into the location and furthermore are difficult to position when constructing the retaining wall thereby adding additional cost and labor for installation. However, the heavy materials are needed once the wall is constructed to provide stability and security to the structure. Therefore, easy to install light-weight units used for the construction of a retaining wall, which can be weighted once placed into position to provide retention of the block and thereby stabilize the completed retaining wall, would be beneficial to construction of such structures.  
         SUMMARY OF THE INVENTION  
         [0009]    As previously mentioned the present invention relates to a retaining wall planter block that is resistant to damage and wear caused by the surrounding environment. The deterioration resistant block is generally a hollowed frame or shell of a deterioration resistant material that is light-weight, includes a plurality of apertures and is configured to accept one or more filling materials that may include seeds. The filling material provides weight and stability to the retaining wall planter block and also ultimately provides stability and security to the retaining wall constructed of such blocks. Furthermore, one or more of the filling materials placed into the block is generally suitable for the growth of vegetation, such as grass, moss, or other vegetation native to the surrounding environment.  
           [0010]    More specifically, the deterioration resistant planter block comprises a top panel, a bottom panel, a wall assembly and an optional anchoring device. One or more chambers are created by adjoining the top panel, bottom panel and wall assembly. The chambers are adapted for receiving and retaining one or more fill materials, such as sand, dirt, gravel, pea rock, peat, or any other similar material, which provides permanent weighting and stability of the planter block and also provides the seeds nutrients for exceptional vegetation growth. The planter block further comprises a plurality of apertures that are adapted to allow vegetation to grow from the apertures to the exterior of the planter block.  
           [0011]    Embodiments of the present invention include a deterioration resistant retaining block for use in constructing retaining walls on properties that are exposed to harsh environments, such as waterfront properties. The deterioration resistant planter blocks are particularly useful for properties near water or underwater due to their resistance to degradation and adaptation to the surrounding environment. As previously suggested, the planter block is configured to provide structural scaffolding for vegetation growth. Furthermore, the scaffolding provides stability to a surface, such as a bank, ravine, shoreline or the like, thereby preventing erosion, as well as providing an optimum environment conducive to vegetation growth that is aesthetically acceptable. It is also noted that the deterioration resistant blocks could also be used for other landscaping applications wherein an easy to install, light-weight retaining wall block that includes vegetation is desired. Therefore, the deterioration resistant planter wall block could be utilized to construct any form of wall or fence structure, such as a vine covered wall.  
           [0012]    Generally, the planter block possesses light-weight characteristics before it is filled with a fill material that may include seeds. As previously mentioned, embodiments of the present invention can be waterproof and may be filled with any type of fill material located at the site or applied for optimum growing characteristics, such as soil, peat, rocks, sand, gravel, pea rock or other similar materials. The filling characteristic of the deterioration resistant block means that when the block is not filled or only partially filled it is very light-weight. The light-weight feature provides individuals constructing such walls the advantage of easily moving large numbers of the blocks to the site of construction with relative ease. Furthermore, the lightweight characteristic of the blocks allows for easy maneuvering of the blocks into final position when constructing the wall and still allows for the stability of a heavy block after it is completely filled. These characteristics are met by the block being made of a lightweight material and also configured to receive a heavy fill material once it is about to be placed or has been placed in its final position on the retaining wall. Additional configurations of the present invention may include pre-packaged blocks where the seeds and/or suitable fill material are tailored for the installation site.  
           [0013]    Additionally, embodiments of the present invention further satisfy an unmet landscaping need for shorelines in that the deterioration resistant planter blocks are easily manufactured. Examples of possible manufacturing methods include but are not limited to injection-molding, dip-molding and blow-molding. Also any high volume application for production may be utilized in manufacturing the present invention. The individual units are light-weight, attractive, easy to install, prevent shoreline and other terrain erosion and may compliment existing traditional retaining wall block. The deterioration resistant blocks are also waterproof, can withstand ice damage due to their flexible nature and are easily replaced in case of damage. Furthermore, they are rugged and very low maintenance. Moreover, embodiments of the present invention are easily transportable and storable due to their light-weight and potential stacking features.  
           [0014]    The lightweight material of the block makes it easier for individuals to install the planter block made of a deterioration resistant material themselves rather than cement block, timbers, keystones and the like. The minimum weight of most regular garden block is approximately 30-50 lbs, whereas embodiments of the present invention may be approximately 0.1-10 lbs. Of course, weight may vary depending on the size and materials utilized in manufacturing embodiments of the present invention. Also, as previously mentioned the blocks of the present invention retain the final stability and weight by filling the block with an appropriate fill material and seeds either prior to or after it has been permanently installed.  
           [0015]    The embodiments of the present invention are resistant to deterioration, such as wear, crumbling and breaking. Therefore, the deterioration resistant block does not have to be replaced as often and/or increases the lifespan of the retaining wall. The block has approximately the lifespan of at least 5-10 times the life of a regular keystone. The increased lifespan of the block translates to fewer or no occurrences of replacement of individual blocks or the potential complete reconstruction of the entire wall. Furthermore, retaining wall materials, such as concrete block, timbers and keystone, are typically not used in water applications because they dissolve, crumble and/or break down over time and exposure. The durability and resistant characteristics of the present invention reduce and prevent this deterioration, therefore making it very beneficial for all applications that come in contact with water.  
           [0016]    Another advantage of the retaining wall planter block of the present invention is the block is resistant to ice damage when installed around a body of water that freezes. When ice expands and/or moves it shifts, tears and damages various types materials utilized for shoreline retention, such as keystone, concrete block, rip rap, landscape timbers or anything rigid. Embodiments of the present invention can be manufactured with a material that has flexibility and would flex in a similar way as a Rubbermaid® trash can flexes. Considering that the deterioration resistant block would be filled with a fill material, the deformation would be minimal, but still enough to prevent damage to the retaining wall planter block and/or the entire wall. Furthermore, upon melting or shifting of the ice the deterioration resistant block returns to its original configuration.  
           [0017]    Another advantage of embodiments of the present invention relates to the high cost of waterfront property and people&#39;s inclination to improve their property to keep it well-maintained and aesthetically pleasing. Embodiments of the present invention allow for controlled growth of vegetation to reestablish the natural environment and preserve the integrity of the shoreline that may be susceptible to erosion. Furthermore, the planter blocks of the present invention provide a softer shoreline that is amenable to native shoreline vegetation and organisms. Therefore, the planter blocks of the present invention provide an optimal medium for the natural habitat, as well as an aesthetically pleasing and structurally sound shoreline.  
           [0018]    Many waterfront properties suffer water damage when water levels rise above the shoreline. The retaining wall planter block of the present invention is a solution to water retention and erosion problems in such areas of threatening high or fluctuating water levels. Furthermore, the retaining wall planter block poses a solution in locations where there is a flood plane or areas that are washed out by any type of water movement. Sandbags have been a solution to such problems, but are not a permanent or aesthetically pleasing solution. The retaining wall planter block can replace sand bags in an area for which a more permanent and aesthetically pleasing alternative is desired.  
           [0019]    As previously suggested, the deterioration resistant retaining wall planter block can comprise any type of shape, configuration, color and design. In addition the retaining wall planter block may include any design or color located anywhere on any panel or wall of the block. Embodiments of the present invention may be shaped like Keystone® block, concrete block, brick or any other configuration that is desired. Therefore, the present invention provides an aesthetically pleasing solution and replacement for materials, including timbers, concrete or sandbags, presently utilized in retaining wall construction. 
       
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0020]    [0020]FIG. 1 is a perspective view of one embodiment of a deterioration resistant retaining wall planter block;  
         [0021]    [0021]FIG. 2 is a side view of a deterioration resistant retaining wall planter block which includes a retaining flange;  
         [0022]    [0022]FIG. 3 is a front view of a deterioration resistant retaining wall planter block which includes insertable pegs.  
         [0023]    [0023]FIG. 4 is a perspective view of a deterioration resistant retaining wall planter block which includes lockable insertable pegs;  
         [0024]    [0024]FIG. 5 is a perspective view of deterioration resistant retaining wall planter blocks which includes apertures for receiving lockable insertable pegs;  
         [0025]    [0025]FIG. 6 is a perspective view of a deterioration resistant retaining wall that includes staggered rows;  
         [0026]    [0026]FIG. 7 is a perspective view of a deterioration resistant retaining wall planter block containing multiple chambers;  
         [0027]    [0027]FIG. 8 is a top view of a multiple chamber deterioration resistant retaining wall planter block that includes a top panel with multiple apertures;  
         [0028]    [0028]FIG. 9 is a perspective view of a cover of a deterioration resistant retaining wall planter block;  
         [0029]    [0029]FIG. 10 is a top view of a section of a deterioration resistant retaining wall planter block;  
         [0030]    [0030]FIG. 11 depicts a top view of a multi-unit deterioration resistant retaining wall planter block;  
         [0031]    [0031]FIG. 12 depicts a front view of a multi-unit deterioration resistant retaining wall planter block;  
         [0032]    [0032]FIG. 13 depicts a top view of a multi-unit deterioration resistant retaining wall planter block with disengaged tabs;  
         [0033]    [0033]FIG. 14 depicts a top view of a deterioration resistant retaining wall planter block that includes interlocking keys and locks;  
         [0034]    [0034]FIG. 15 depicts a left side perspective view of the deterioration resistant retaining wall planter block of FIG. 14;  
         [0035]    [0035]FIG. 16 depicts a right side perspective view of the deterioration resistant retaining wall planter block of FIG. 14;  
         [0036]    [0036]FIG. 17 depicts a top view of the deterioration resistant retaining wall planter block of FIG. 14;  
         [0037]    [0037]FIG. 18 depicts a front view of a deterioration resistant retaining wall incorporating wings that cover the interlocking keys and locks;  
         [0038]    [0038]FIG. 19 depicts a perspective view of a deterioration resistant retaining wall planter block with a back panel aperture;  
         [0039]    [0039]FIG. 20 depicts a perspective view of a deterioration resistant retaining wall planter block with a back panel aperture;  
         [0040]    [0040]FIG. 21 depicts an embodiment of the present invention wherein the deterioration resistant retaining wall planter blocks are stacked; 
     
    
     DETAILED DESCRIPTION OF THE INVENTION  
       [0041]    [0041]FIG. 1 depicts one embodiment of the deterioration resistant retaining wall planter block  10  comprising a top panel  12 , a bottom panel  14  and a wall assembly  16 . Generally, the top panel  12  includes one or more apertures  18 . The apertures  18  may be of any size and shape suitable for the receiving of fill material and/or the emergence of growing vegetation from the planter block  10 . The bottom panel  14  includes a relatively flat surface or contoured to rest uniformly with the top panel  12  of one or more blocks  10  positioned below.  
         [0042]    The bottom panel  14  may also include or be adjoined to an anchoring device  20 . FIG. 2 depicts the side view of an embodiment of the present invention, which includes an anchoring device  20  in the form of a retaining flange  22  adjoined to the bottom surface  14  of the block  10 . On a constructed wall, each retaining flange  22  is a wall retention device that operates to inhibit outward movement of the wall. Normally, the retaining flange  22  extends downward from the back of the bottom panel  14  and rests against the back of the retaining block  10  located below the bottom panel  14 . The retaining flange  22  may be a unitary piece extending downward from the back of the retaining block  10  or a series of fingers extending downward from the back of the retaining block  10 .  
         [0043]    Another embodiment of the present invention may include an anchoring device  20  in the form of insertable pegs  24 . In FIG. 3 the insertable pegs  24  are adjoined to the bottom panel  14  and are configured to be securely receivable in the apertures  18  of an additional adjoining top panel  12  of another retaining block  10 . The insertable pegs  24  can be made of any shape and size, which can be securely fit into the apertures  18  of the top panel  12 . FIGS. 4 and 5 depict another type of peg configuration. FIG. 4 illustrates a bottom panel  14  of one embodiment of the present invention wherein the insertable pegs  24  are lockable. The insertable pegs  24  are positioned on the bottom panel  14  at an angled configuration. The top panel  12 , illustrated in FIG. 5, includes apertures  18  adapted to receive the lockable insertable pegs  24 . In operation a block  10  is maneuvered so that the pegs  24  of one block are inserted into the apertures  18  of another block. The block  10  possessing pegs  24  is then turned into position thereby locking the two blocks together. The pegs  24  on a block  10  may also be configured to fit into the apertures of two adjacent blocks positioned below. This application is beneficial if the blocks of adjacent rows are staggered in positioning. See FIG. 6 for an illustration of a staggered retaining wall.  
         [0044]    The deterioration resistant retaining block  10  also includes a wall assembly  16 , which is also depicted in FIGS.  1 - 3 . The wall assembly  16  comprises one or more outside walls  25  that may generally include a plurality of apertures  18 . Embodiments of the present invention include wall assemblies  16  that are adjoined to the top panel  12  and bottom panel  14 . The adjoinment of the wall assembly  16  to the top panel  12  and bottom panel  14  creates a chamber  26  located within the retaining block  10 . The chamber  26  is normally filled with materials that are conducive to vegetation growth such as dirt, peat, sand, gravel, growth sponges or other like materials. The fill materials also provide weight and structure stability to the retaining planter block  10  and the entire retaining wall.  
         [0045]    Another embodiment of the present invention is depicted in FIGS.  7 - 9 . The embodiment shown in FIG. 7 comprises a deterioration resistant retaining block  10  with the top panel  12  removed, wherein the wall assembly  16  defines more than one chamber  26  within the retaining planter block  10 . The multiple chambers  26  are defined by interior partitions  28 . The interior partitions  28  may also be utilized to add additional support to the retaining planter block  10 . The interior partitions  28  may also include apertures  18  for growth of vegetation and/or growth of vegetation roots between the chambers  26  of the planter blocks  10 .  
         [0046]    [0046]FIG. 8 depicts one embodiment of the top panel of a partitioned retaining planter block  10 . The interior partitions  28  are within the interior of the retaining block  10  and are depicted by dashed lines. In this embodiment of the present invention, the top panel  12  is permanently fixed to the wall assembly  16  and includes multiple apertures  18  to accommodate filling of each individual chamber  26  with appropriate fill material, such as dirt, peat, sand, gravel or any other suitable material. The apertures  18  also provide openings for vegetation growth.  
         [0047]    [0047]FIG. 9 depicts another possible embodiment of the top panel  12 , which is configured in a cover formation that may be adapted to securely fit over the retaining planter block  10  illustrated in FIG. 7. The top panel  12  of this embodiment comprises a closed section  30  that includes overlapping edges  32 , which overlap securely over the outside walls of the wall assembly  16 . However, the top panel may also secure to the wall assembly  16  in other ways, such as locking tabs, twist locks, clamps, clips, adhesives, ultrasonic welding, RF welding, or any other means of attachment or fastener. The top panel  12  of this embodiment may optionally be hingedly secured to the retaining planter block  10  by any type of hinge device (not shown), thereby providing a unitary configuration of the retaining wall planter block  10 . Finally, the top panel  12  may also include apertures for accommodating the growth of vegetation.  
         [0048]    Multiple chambers  26  also allow for the retaining block  10  to be cut into various shapes and still maintain a chamber that can receive and retain fill materials and seeds. FIG. 10 depicts a section of the retaining block  10  as shown in FIG. 7 wherein the corners have been removed and the block  10  has been cut in half. The ability to cut the retaining planter block  10  and still retain the same features is particularly useful in preparing ends and awkward segments of retaining walls. Dashed lines depicted in FIG. 9 illustrate alternate cover configurations to conform to the various shapes of a retaining planter block  10  or portions thereof.  
         [0049]    An additional embodiment of the present invention is depicted in FIGS. 11 and 12. FIG. 11 illustrates a top view of a retaining planter block  54  wherein multiple units  34  are incorporated into a single planter block  54 . A single multi-unit planter block  54  provides the appearance of multiple retaining blocks present in a single structure. The top panel  12  may be integral to the block or may comprise a single sheet, which covers each unit  34  or multiple sheets in which each sheet covers a single unit of the multi-unit block. Furthermore, the top panel  12  may include apertures  18  for vegetation growth and optionally for filling. The interior of the retaining planter block  54  of this embodiment includes one or more interior partitions  28 .  
         [0050]    [0050]FIG. 12 depicts the front view of the multi-unit retaining planter block  54 , which has the appearance of multiple separate units  34 . These multiple separate units  34  provide the appearance similar to the partial assembly of a retaining wall comprising a plurality of individual blocks, such as depicted in FIG. 6. The multi-unit retaining planter block  54  may be a unitary structure or may include multiple components, such as a multi-unit planter block  54  including a single top panel (not shown), similar to the top panel depicted in FIG. 9.  
         [0051]    [0051]FIG. 13 depicts another embodiment of a multi-unit retaining wall planter block  54 , which can be configured to accommodate a curved terrain. In this embodiment of the present invention, tabs  58  may be positioned between each individual unit  34  on the front and/or back of the multi-unit block  54 . If a curved wall is desired, the tabs  58  may be disengaged, thereby allowing the multi-unit block  54  to be maneuvered into convex and/or concave positions.  
         [0052]    Another type of anchoring device  20  included in the present invention may be a side locking mechanism. As depicted in FIGS.  14 - 17  one or more interlocking keys  36  and locks  38  may be included in the retaining block. Each key  36  may include a rounded relatively flat cylinder  40  adjoined to a neck  42  that is attached to the side wall  44  of a retaining planter block  10 . Each lock  38  comprises a partially enclosed cavity  46 , which is configured to receive and securely retain the key  36  when inserted into the lock  38 .  
         [0053]    As depicted in FIG. 18, wings  48  located on the front of each retaining planter block  10  function to hide the key and lock system from the view of an observer of the retaining wall. The retaining wall planter blocks  10  of the present invention may also include other side attachments, such as hook and pile attachments (not shown) or any other side attachment suitable for interlocking more than one retaining wall planter block  10 .  
         [0054]    [0054]FIG. 18 further illustrates an embodiment of the present invention wherein the apertures  18  include aperture covers  49  for allowing growth of vegetation to occur. The aperture covers  49  may be a nonbiodegradable or biodegradable screen, meshing or other configuration comprised of cloth, plastic, paper, cardboard, metal or any other suitable material. Furthermore, the aperture cover may be a biodegradable and/or deteriorating coating that retains the fill material and seeds but, allows for vegetation growth. An example of such meshing may be made of jute, coir, burlap, biodegradable polymers or other biodegradable materials similar to the meshings produced by Hy-Tex (UK) Limited, PO Box 97, Aldington, ASHFORD, Kent TN25 7EA. It is noted that the biodegradable material, such as meshing, may also include substances such as fertilizer or pesticides that are released upon degradation of the biodegradable material.  
         [0055]    The apertures  18  may be of any size and may include apertures  18  that cover a large portion of the outside walls  25  and top panel  12 . Alternatively, the aperture covers  49  may completely cover the outside or inside of the retaining wall planter block  10  to ensure coverage and security of the apertures and thereby inhibit loss of fill material and/or seeds. An additional embodiment of the present invention may be a retaining wall planter block  10  wherein the top panel  12 , bottom panel  14  and wall assembly  16  are comprised of the screens, grids and/or meshing to form the planter block  10 . For example, a polymer planter block may be partially or completely perforated forming apertures that could support vegetative growth.  
         [0056]    The retaining wall planter block  10  depicted in FIGS.  19 - 21  include a top panel  12 , a bottom panel  14  and a wall assembly  16  configured to form one or more chambers  26 . Generally, the top panel  12  and bottom panel  14  only include apertures conducive to the growth of vegetation. Furthermore, the top panel  12 , bottom panel  14  and wall assembly  16  may be a unitary structure or piece. The difference in this embodiment is that the back wall  50  includes one or more back apertures  52  that can be sealed, after it is filled, with a cover or other type of plugging device (not shown). The back apertures  52  can be of any shape and size and may extend to any or all of the side panels  16 , top panel  12  and/or bottom panel  14 . The embodiment depicted in FIGS.  19 - 21  may also include an anchoring device, such as a retaining flange  22  or any other type of anchoring device.  
         [0057]    The embodiment of the present invention as depicted in FIG. 19 is preferably used when retaining walls are embedded into or positioned flush with a hill or other type of ridge thereby further sealing the one or more back apertures  52 . The retaining wall planter block  10  may be filled with a filling material that may include seeds from the back and then placed into position on the retaining wall. Once in position on the retaining wall, the fill material utilized to secure and weight the retaining wall planter block  10  is maintained within the chamber  26  by the cover or plug and further by the soil, peat, sand, gravel, or similar material, which makes up the hill or ridge. An embodiment including multiple units (not shown) may also incorporate into the structure a back panel with one or more apertures. The multi-unit planter block of this embodiment may include multiple units arranged side by side vertically or horizontally.  
         [0058]    The presence of an aperture positioned in the back wall  50  may also allow for easy storage and transport due to the stackable capabilities present. For example, an individual planter block  10  or a multi-unit block  54  may be inserted into the back of another planter block  10  or multi-unit block  54  thereby creating a stackable arrangement. An illustration of stacking individual planter blocks  10  is depicted in FIG. 21.  
         [0059]    As previously mentioned, the present invention may be manufactured from a deterioration resistant, substantially rigid composite or polymeric material including, but not limited to, plastic, a rubber composition, fiberglass, or any other similar material or a combination thereof. Preferable materials comprise light-weight and slightly flexible. Generally, the embodiments of the present invention may comprise any type of material that would have the similar characteristics to plastic, vinyl, silicone, fiberglass, rubber or a combination of these materials. It is noted that the material utilized in the present invention should be rigid enough to hold its form upon addition of filling material and also when placed in contact with other objects. Another preferable material may be comprised of a material similar to that utilized in the production of some types of garbage cans or the utilization of recycled rubber from objects such as tires. Such materials would be capable of holding rigidity and still offer flexibility when placed in contact with other objects, such as ice. Also, such materials have the ability to regain its original form when the object or material has been removed.  
         [0060]    Embodiments of the present invention may also vary in appearance. Since embodiments of the present invention may be manufactured by a process such as injection molding, the molds may include any type of design or shape. Furthermore, the front panels of the retaining wall planter block  10 , as shown in FIGS. 4, 5 and  6 , could be molded in almost any type of configuration. In one embodiment, multiple retaining wall planter blocks could be molded to include designs that, when positioned on a retaining wall, would complete a larger single design, such as the spelling of a company or school name in large letters or the completion of a large image. Also, since the present invention may be manufactured from a number of different products, such as plastic, a rubber composition or fiberglass, the retaining wall planter block may comprise any color or a multitude of colors. For example, a retaining wall installed in a beach setting may be manufactured of a plastic or rubber product and be colored to easily blend with the vegetation growing upon or within the retaining wall planter block.  
         [0061]    Additionally, the apertures  18  may be positioned to accommodate vegetative growth in various desired designs, mosaics, words and/or shapes. Vegetative growth can be of many different colors and therefore can create colorful designs when emerging from the planter block  10 .  
         [0062]    Furthermore, the planter block of the present invention may be of any size. For example, the block may be sized similar to the blocks publicly available, which generally have a length of 10″-20″, a width of 3″-8″ and a depth of 4″-18″. However, planter blocks of the present invention may also be sized much larger than the conventional block. For example, a block utilized on a shoreline may be of a very large size, such as dimensions as follows: length of 4′-8′, width of 1′-3′ and a depth of 2′-6′.  
         [0063]    As previously suggested the environment resistant retaining wall planter block  10  is utilized in the construction of any type of wall or border. In application, a foundation is first created in the area that the wall or border is to be constructed. The foundation preferably is flat and or level and can accommodate one or more retaining planter blocks  10 . Once a foundation is completed, a first row is laid by filling each individual retaining block  10  with a fill material and placing each individual or multi-unit planter block, side by side until the row is completed. The filling of the retaining wall planter block gives it the added weight that it needs to retain its structure and hold it in place. A funneling device may be utilized, which fits securely into the openings or apertures of the retaining wall planter block to guide fill into the chamber of the block. The first row may be straight or rounded. An example of a rounded first row is depicted in FIG. 20. Upon completion of the first row, additional rows are constructed by performing the same filling process and placing the retaining wall planter block  10  in the proper position atop the previously completed row until a continuous retaining wall is completed. Generally, a continuous retaining wall includes stacked rows wherein individual retaining planter blocks are placed adjacently to one another thereby eliminating or minimizing cracks or gaps in the wall.  
         [0064]    Retaining wall planter blocks  10  may be positioned directly over other retaining wall planter blocks  10  in lower rows or may be staggered. Furthermore, the retaining wall planter blocks  10  of the upper rows may overlap the back of retaining wall planter blocks  10  of lower rows if a retaining flange  24  is included on the block. In the alternative or additionally, each individual retaining block  10  may be locked into position with adjacent blocks if pegs  24  and apertures  18  or keys  36  and locks  38  are present on the retaining block  10 . Upon completion of the top row of the retaining wall, a cover may or may not be placed over the top row to close the apertures  18  of the top panels  12  or to provide a finishing border to the top of the retaining wall. The cover may include apertures as depicted in FIG. 9.  
         [0065]    Embodiments of the present invention may also be used in conjunction with regular keystone bricks or stones. A retaining wall constructed in water or along a waterfront property may utilize the retaining wall planter block of the present invention at water level and below and then the regular keystone or retaining wall materials can be used on top of the retaining wall planter block of the present invention. The utilization of the retaining wall planter block of the present invention would be easy to match colors with the conventional retaining wall building materials because the materials utilized to manufacture the present invention can be colored and designed to match virtually any type of retaining wall construction material.  
         [0066]    Furthermore, the retaining wall planter block may be manufactured in a multitude of different sizes, shapes and configurations. For example, an embankment or steep shoreline could support a retaining wall configured in a step like arrangement or design. Such a structure, may be utilized as a retaining wall and/or as a grassy stairway down to a beach or to the water if vegetation is growing from the planter block.  
         [0067]    While the invention has been illustrated and described in detail in the drawings and foregoing description, such an illustration and description is to be considered as exemplary and not restrictive in character, it being understood that only the preferred embodiments have been shown and described and that all changes and modifications that come within the spirit of the invention are desired to be protected.