![]() A high percentage of broom seeds (greater than 65%) have been found to be impervious in some studies, which can delay germination from months to years, contributing to the seed bank (Bossard 1993).įirst flowers appear in the lower Fraser Delta in late March-early April. Europe versus Australia) (Shephard et al. 1998), although seedling mortality rates vary from region to region (e.g. Seedling survival is positively correlated with disturbance (Paynter et al. Other researchers have found that seed bank germination is highest in disturbed sites, and in Europe is correlated with March rainfall, both factors that could influence management actions (Paynter et al. Some researchers have found that cutting broom at the end of the dry season can decrease resprouting rates (Bossard and Rejmanek 1994). Control is difficult, and ranges from hand cutting of shrubs to use of biological control agents. Scotch broom is an aggressive invasive species. It is also listed as one of the top fourteen species of concern by the Coastal Invasive Plant Committee. For further information about control of broom, visit their web site. This species is listed by the Greater Vancouver Invasive Plant Council one of the twelve most problematic species in the Vancouver region. Additional information about English broom is located on the Agriculture Victoria website - including plant status, plant biology, growth calendar and lifecycle, as well as management options. Common name: English broom, Scotch broom, broom, Common broom. While the peak flowering period for this species is May/early June, flowers have been observed on plants as early as February and as late as December in the Vancouver area. Scientific name: Cytisus scoparius (L.) Link. Seeds spread most quickly via water, and along roadways ( Global Invasive Species Database 2011). It reaches heights of 1-3 (4) m, shading out understorey species. This species shows preference for dry sandy soils in full sun, with a soil Ph of 4.5 to 7.5 (Global Invasive Species Database 2010). ![]() It also found in the Queen Charlotte Islands and in the southern interior. Today is it widespread on Vancouver Island and the adjacent Lower Mainland. Branches are erect and angled, with prominent ridges. ![]() Leaves are small, short-lived, and simple or 3-parted. The first BC collection record for Scotch broom in the UBC herbarium is from 1905, when it was collected by Edith M. Scotch broom, a non-regulated Class B noxious weed, is an evergreen shrub that grows 6-10 feet tall and forms dense stands throughout King County, including in pastures, empty lots, and on roadsides. It was introduced to the east coast of the United States in the 1800's ( National Invasive Species Information Centre 2010, Global Invasive Species Database 2011) and is now found in several eastern and western states (AK, AL, CA, CT, DC, DE, GA, HI, ID, KY, MA, MD, ME, MI, MT, NC, NH, NJ, NY, OH, OR, PA, SC, TN, UT, VA, WA, WV) and in Canada (BC, NS, PEI) ( USDA 2010). Scotch broom is a perennial shrub species in the pea family (Fabaceae) that originates in central and southern Europe and northern Asia. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |