Patent Publication Number: US-PP28718-P3

Title: Ground cover rose plant named ‘Poultc023’

Description:
Botanical designation:  Rosa  hybrid. 
     Variety denomination: ‘Poultc023’. 
     SUMMARY OF THE INVENTION 
     The present invention constitutes a new and distinct variety of garden rose plant which originated from a controlled crossing between the female seed parent, an unnamed seedling, and the male pollen parent, also an unnamed seedling. Both of the parent varieties are non-patented. 
     The two parents were crossed during the summer of 2007 and the resulting seeds were planted in a controlled environment in Fredensborg, Denmark. The new variety, named ‘Poultc023’, originated as a single seedling from the stated cross. 
     The new variety may be distinguished from its male pollen parent and female seed parent primarily by the following characteristics. The male pollen parent has apricot colored flowers, while the new variety has red flowers. The female seed parent has smaller flowers than the new variety. 
     The objective of the hybridization of this rose variety was to create a new and distinct variety for garden use with unique qualities, such as:
         1. Uniform and abundant red flowers;   2. Vigorous, but compact growth when propagated both as a budded rose and on its own roots;   3. Exceptional disease resistance.       

     This combination of qualities is not present in previously available commercial cultivars of this type, known to the inventor, and distinguish ‘Poultc023’ from all other varieties of which we are aware. 
     As part of the rose development program, Mogens N. Olesen germinated the seeds from the aforementioned hybridization during winter of 2007 and conducted evaluations on the resulting seedlings in a controlled environment in Fredensborg, Denmark. ‘Poultc023’ was selected in the spring of 2008 by the inventor as a single plant from the progeny of the aforementioned hybridization. 
     Asexual reproduction of ‘Poultc023’ by traditional budding and rooted cuttings was first done by Mogens N. Olesen in the nursery in Fredensborg, Denmark in July, 2008. This initial and other subsequent asexual propagations conducted in controlled environments have demonstrated that the characteristics of ‘Poultc023’ are true to type and are transmitted from one generation to the next. 
    
    
     
       DESCRIPTION OF THE DRAWING 
       The accompanying color illustrations show as true as is reasonably possible to obtain in color photographs of this type, the typical characteristics of the buds, flowers, leaves, and stems, of ‘Poultc023’. 
       Specifically illustrated in  FIG. 2  are a cluster of un-opened flower buds, flower petals detached, reproductive flower parts, detached sepals, a fully opened flower, and other flowers at various stages of their development.  FIG. 1  shows a cluster of fully opened flowers as it appears on a branch, peduncles, a bare branch exhibiting prickles, and leaves. Plants shown are 2 years of age. 
     
    
    
     DETAILED DESCRIPTION OF THE VARIETY 
     The following is a description of ‘Poultc023’, as observed in its growth in in a field nursery in Marion County, Oreg. Observed plants are 2 years of age, and were grown on their own roots. Color references are made using The Royal Horticultural Society (London, England) Colour Chart, 2001, except where common terms of color are used. 
     For a comparison, several physical characteristics of the rose variety ‘Poulharmu’, U.S. Plant Pat. No. 12,681 are compared to ‘Poultc023’ in Chart 1, below: 
     
       
         
           
               
               
               
               
             
               
                   
               
               
                   
                   
                 ‘Poultc023’ 
                 ‘Poulharmu’ 
               
               
                   
               
             
            
               
                   
                 Petal Count 
                 20 
                 14-16 petals 
               
               
                   
                 Flower Diameter 
                 65 mm 
                 45 mm 
               
               
                   
                 General Tonality 
                 Red Group 46A 
                 Red Group 44 
               
               
                   
                 of Flower Color 
               
               
                   
               
            
           
         
       
     
     Flower and Flower Bud 
     
         
         Blooming habit: Continuous. 
         Flower bud:
             Size .—Upon opening, about 20 mm in length from base of receptacle to end of bud. Bud diameter is 9 mm.     Bud form .—Ovoid.     Bud color .—As sepals divide petals are Red Group 46A.     Sepal inner surface .—Color: Yellow-Green Group 145B. Surface: Lightly pubescent.     Sepal outer surface .—Color: Yellow-Green Group 144A with intonations of Greyed-Purple Group 183A. Texture: Smooth.     Sepal shape .—Apex: Cirrhose. Base: Flat at union with receptacle.     Sepal margin .—Margins have weak foliaceous appendages on three of the five sepals.     Sepal size.— 15 mm long, 6 mm wide.     Receptacle .—Texture: Smooth. Size: About 6 mm in height, 6 mm wide. Color: Yellow-Green Group 144A with intonations of Greyed-Purple Group 183A. Shape: Elliptic.     Pedicel .—Surface: Smooth. Length: About 23 mm. Diameter: 2 mm. Color: Yellow-Green Group 144A. Strength: Moderate to weak.     Peduncle .—Length: Ranging from 3 to 10 cm. Diameter: 3 mm. Color: Yellow-Green Group 145A. Texture: Smooth.       
     
         Flower bud development: Flower buds are borne in panicles consisting of 15 to 30 flower buds per flowering stem. 
         Flower bloom:
             Fragrance .—Moderate, old rose scent.     Duration .—The blooms have a duration on the plant of approximately 8 days. Petals fall cleanly away from plant after flowers have fully matured.     Size .—Flower diameter is about 65 mm when fully open. Flower depth is about 18 mm.     Flower shape .—Open cup, semi double.       
     
         Shape of flower, side view: The upper portion is a flat convex. The lower portion is concave. 
         Petalage: Under normal conditions, flowers have 20 petals total, 3 of which are petaloids. 
         General tonality of flower: Open flowers are Red Group 46A. 
         Petal color:
             Upper surface .—Red Group 46A.     Lower surface .—Red-Purple Group 59C with occasional streaks White Group N155A.     Petal base .—Upper and lower surface is a spot of Yellow Group 4D.       
     
         Petals:
             Petal reflex .—Flat.     Margin .—Entire and uniform. Moderate undulations.     Shape .—Elliptic with a broad apex. Apex shape: Rounded. Base shape: Acute.     Size.— 25 mm (l)×22 mm (w).     Texture .—Smooth.     Thickness .—Thin.       
     
         Petaloids:
             Size .—About 10 mm (l) by 5 mm (w).     Quantity.— 3 on average.     Shape .—Asymmetric, crescent shaped.     Color .—The upper surface is Red Group 46A. The lower surface is Red-Purple Group 59C. Base of petaloid is Yellow Group 4D.       
     
         Reproductive flower parts:
             Pollen .—None observed.     Anthers .—Size: 1 mm in length. Color: Yellow-Orange Group 14C. Quantity: 45 on average.     Filaments .—Color: Orange-Red Group 34C. Length: 5 mm.     Pistils .—Length: 2 mm. Quantity: 20 on average.     Stigmas .—Color: Greyed-Yellow Group 162D.     Styles .—Color: Greyed-Purple Group 187A.     Location of stigmas .—Inferior in location relative to the length of the filaments and the height of the anthers.     Hips .—None Observed.       
     
       
    
     Plant 
     
         
         Plant growth: Upright, bushy. Plants are about 55 cm in height, and 65 cm wide. 
         Stems:
             Color .—Juvenile growth: Yellow-Green Group 144B. Mature growth: Yellow-Green Group 144A.     Length .—On average, canes are 40 cm from the base of the plant to the flowering portion.     Diameter.— 7 mm.     Internodes .—On mature canes about 30 mm between nodes.     Surface texture .—Young wood: Smooth. Older wood: Smooth.       
     
         Long prickles:
             Incidence.— 15 prickles per 10 cm of stem.     Size .—Average length of prickles on mature stems is 6 mm.     Shape .—Upper and lower portion of prickles are concave.     Color .—Juvenile prickles: Greyed-Purple Group 181B. Mature prickles: Greyed-Orange Group 168D.       
     
         Plant foliage:
             Compound leaf .—About 85 mm (l)×60 (w).     Quantity.— 3 leaves per 10 cm of stem on average.     Color of juvenile foliage .—Upper side: Yellow-Green Group 144A. Lower side: Yellow-Green Group 144B.     Color of mature foliage .—Upper side: Yellow-Green Group 147A. Lower side: Yellow-Green Group 146B.       
     
         Plant leaves and leaflets:
             Stipules .—Size: 20 mm long, 5 mm wide. Quantity: 2 per compound leaf. Shape: Linear, slightly broad based with outward extending apices. Margins: Finely serrated. Color: Yellow-Green Group 144A.     Petiole .—Length: 20 mm. Diameter: 1.5 mm.     Upper surface .—Color: Yellow-Green Group 144A.     Lower surface .—Color: Yellow-Green Group 144B.     Rachis .—Length: 25 mm. Upper surface: Color: Yellow-Green Group 144A. Lower surface: Color: Yellow-Green Group 144B.     Leaflet .—Quantity: Normally 7 leaflets. Margins: Serrated. Size: On average terminal leaflets are 35 mm long, 20 mm wide. Shape: Generally elliptical. Base: Rounded. Apex: Acuminate. Texture: Smooth. Thickness: Average. Arrangement: Odd pinnate. Venation: Reticulate. Glossiness: Very glossy.       
     
         Disease resistance: Above average resistance to powdery mildew  Sphaerotheca pannosa , downy mildew  Peronospora sparsa , rust  Phragmidium  sps., black spot  Diplocarpon rosae , and  Botrytis cinerea  under normal growing conditions. 
         Cold hardiness: The variety is tolerant to USDA Cold Hardiness Zone 6. 
         Heat tolerance: The variety has been found to be suitable for climate conditions found in the American Horticulture Society heat zone 7.