Laserfiche WebLink
d i <br /> RDepa <br /> Rangeland, pasture, and riparian site recommendations <br /> Colorakof Hoary oary cress <br /> 3051nterlocken Pkwy Identification and Management <br /> Broomfield,CO 80021 <br /> well on alkaline soils. <br /> (303)869-9030 <br /> nweeds@state.co.us <br /> • �� The key to effective control of <br /> Hoary cress is prevention. <br /> Preventing the encroachment <br /> of these weeds is the most cost- <br /> effective management. Preventing <br /> invasions by limiting seed dispersal, <br /> monitoring and using weed free hay, <br /> and quarantine animals that may <br /> have grazed in infested areas. Beyond <br /> prevention, the key is early detection <br /> when infestations are small, and <br /> ty aggressive management. Integrated <br /> Weed Management is required for <br /> Identification and proper control. Details on the back <br /> Impacts of this sheet can help to create a <br /> management plan compatible with <br /> your site ecology. <br /> a•1 w oary cress (Cardaria draba), C� <br /> H commonly known as whitetop, <br /> His a creeping perennial that is a as oary cress is designated <br /> a "List B" species in the <br /> member of the mustard family Colorado Noxious Weed Act. It <br /> and native to Europe. The stems, is required to be either eradicated, V <br /> in the ro ette stage, may grow up <br /> to 21 in height and produce contained, or suppressed depending <br /> Y ` on the local infestations. For more <br /> grayish-green leaves that are lance shaped. The leaves are alternate information visit www.colorado.gov/ l <br /> _ >� ag/weeds and click on the Noxious �d <br /> and 3/4 to 4 inches long. The upper Weed Management Program. Or <br /> leaves have 2 lobes that clasp the call the State Weed Coordinator <br /> stem. The plant has numerous at the Colorado Department of <br /> small, white flowers with 4 petals on Agriculture, Conservation Services <br /> stalks radiatinV. g from a stem. Seed AgiSion. <br /> ' VI. .a o capsules are heart-shaped with two <br /> small,flat, reddish brown seeds. <br /> One plant can produce from 1,200 <br /> to 4,800 seeds. The plants emerge a R. <br /> in early spring with stems emerging , 3 " <br /> - from the center of each rosette in <br /> • . late April. Hoary cress flowers from > Mir Fed <br /> May to June and plants set seed by ` <br /> mid-summer. <br /> Habitats for Hoary Cress <br /> include:fields, waste places, <br /> . . meadows,pastures, croplands and <br /> along roadsides. It is typically <br /> found on unshaded,generally <br /> open areas of disturbed ground. It photos O Kelly Uhing,Colorado Department of <br /> Updated on: generally does better with moderate Agriculture; Mark Schwarzlander,University of <br /> 07/2015 amounts of precipitation and grows Idaho,Above map:Crystal Andrews,Colorado <br /> Department of Agriculture, <br />