So maybe you should consider doing the job yourself. If you're able to control the problem from the onset, you can avoid having a large brush problem. In addition to avoiding the expense of bringing in a specialist to deal with the problem, you may also avoid complaints concerning the appearance of the property. Location has an effect on the species of brush and its mode of invasion. Species such as elm, maple and ash and a host of other common fenceline brush are spread by air-borne seeds.
Water also carries many unwanted tree seeds.
In Columbus or Cincinnati, Ohio, the multiflora rose or honeysuckle in a fenceline is most likely caused by birds roosting on the fence or telephone lines and dropping seeds they have ingested. Ditto for wild grape vines and for Himalayan blackberries in the Northwest. McCartney rosehedge along the Texas gulf coast can invade your premises from a neighboring property or from roadsides that are lacking proper brush control. They can also show up on golf course roughs, cemeteries, suburban parks, and corporate grounds, distributed by deer, raccoons and other meandering wildlife. While these situations are unsightly and can become major problems if not dealt with in the early stages, immediate attention needs to be given to species that cause irritation to humans coming in contact with them.