Look-alikes: This species looks similar to other bitercress species such as sand bittercress (Cardamine parviflora), Pennsylvania bittercress ( C. pensylvanica Muhl. Following guidelines for controlling other biennial mustards such as garlic mustard, Alliaria petiolata , may be helpful. † Cutting off fl ower heads before seeds have developed prevents further seed dispersal and may be necessary in controlling large infestations. Can be used on St. Augustinegrass, as well as closely mowed bentgrass and bermudagrass fairways. NARROWLEAF BITTERCRESS Cardamine impatiens EARLY DETECTION & CONTROL WILL PREVENT INFESTATIONS! Spraying with glyphosate gives some longer lasting control. Flowers are tiny and white, to 0.1” long. Since the initial discovery of narrowleaf bittercress at Riverside Park, it has continued to spread throughout the park, and has been reported in several other natural areas along the Mississippi River. DCNR defines invasive plants as those species that are not native to the state, grow aggressively, and spread and displace native vegetation. The response was that it was narrowleaf bittercress (Cardamine impatiens). Seedlings often emerge following germination in fall and plants can overwinter in a vegetative state. After the release of this bio-control, Mile-a-minute is noticeably less abundant in most areas of the GNA. It raises its profile in early spring with the appearance of flowers and seeds on a vertical stem. Dealing with Bittercress. † Prescribed burning may be effective on seedling plants and fi rst year rosettes. The basal leaves of … In the second year, it produces a flowering stem. narrowleaf bittercress. available for chemical control of this plant. Narrow-leaf bittercress is an herbaceous annual or biennial plant that can reach two feet in height. Lontrel ® specialty herbicide provides effective postemergence weed control of thistle and other hard-to-manage weeds while providing excellent turfgrass tolerance. Musk thistle (PDF) , Carduus nutans , is also known as nodding thistle from the … Clean all boots, clothing, and equipment … The stem is erect and glabrous. Oriental bittersweet: a heavy, deciduous vine with red and yellow fruit; can girdle or collapse trees Bittercress is one of the first weeds to pop-up in lawns in the early spring. Effective hairy bittercress control requires a tank mix of a postemergence herbicide with simazine or atrazine. A member of the mustard family (Cruciferae), hairy bittercress can function as a winter annual, summer annual, or biennial. Narrow-leaf bittercress is a member of the Mustard family (Brassicaceae). Check out our database of control techniques, which compiles and ranks the effectiveness of control methods for many invasive plants common to the Midwest. Hairy bittercress typically flowers and produces seed during early spring. This site should be monitored and plants removed in the spring, summer, and fall to prevent seed production. Hairy bittercress has a low growing rosette similar in form to a dandelion. A little about Bittercress – Bittercress is a winter annual weed that begins to appear in lawns in very early spring and can quickly spread throughout your lawn. Since 2009, efforts to control the plant in Riverside Park have been ongoing, including hand-pulling events and herbicide treatments. NARROWLEAF BITTERCRESS is a new invader to Minnesota. Narrowleaf bittercress (PDF), Cardamine impatiens, is a member of the mustard family native to Europe. (3) There is little information available for chemical control of narrowleaf bittercress. However, treatment protocols for biennials like garlic mustard may be effective. An herbaceous annual or biennial growing to two feet in height, narrowleaf bittercress is an inconspicuous denizen of moist soils and dappled shade. It is somewhat shade tolerant, so it does well in forest edges or dappled sunlight. Bittercress Cardamine hirsuta I love this little compact, rosette shaped annual with lobed leaves, small white flowers and upright seed pods that explode, flinging the seeds far and wide when ripe and you touch them, hence one of its names ‘shot weed or ‘flick weed’. Clean all boots and equipment to reduce spreading seed. In fact, if you have experience controlling any of the species listed below, you can help improve the database by submitting a case study. This plant can be weedy or invasive according to the authoritative sources noted below.This plant may be known by one or more common names in different places, and some are listed above. Typical mixes are a three­way plus simazine or atrazine or Manor or Blade plus simazine or atrazine. Narrowleaf Bittercress/ Cardamine impatiens MN Department of Agriculture: Narrowleaf bittercress MN Department of Natural Resources: Narrowleaf bittercress: Leafy Spurge/ Euphorbia esula Leafy Spurge ID and Control MN Department of Agriculture: Leafy Spurge MN Department of Natural Resources: Leafy Spurge Common Tansy / Tanacetum vulgare Prohibited - Control Noxious Weeds Narrowleaf Bittercress – Cardamine impatiens Annual or biennial forb grows 6 – 36 inches tall Rosettes develop from seeds; eventually bolting and producing erect stems with many small alternate compound leaves Bolted stems have 6 … Each case study includes details about the control method used, the specific location treated, an… Narrowleaf bittercress (Cardamine impatiens) is a relative newcomer to Minnesota and has the potential to become highly invasive. Narrow-leaf Bittercress is a targeted Early Detection species and needs to be stopped before it becomes more unmanageable. When narrow-leaf bittercress occurs as a biennial, the first year’s growth is a basal rosette of leaves. of Agriculture's fact sheet for more information on control measures. How Can Narrowleaf Bittercress Be Controlled? Ex Willd) and hairy There is little information available for chemical control of narrowleaf bittercress. See the MN Dept. Phone: 651-201-6000 Toll Free: 800-967-2474 711 TTY Like many members of the mustard family, hairy bittercress sets seed prolifically. Invasive plants are generally undesirable because they are difficult and costly to control and can dominate whole habitats, making them environmentally destructive in certain situations. Additional plants controlled on Refuge islands include Oriental bittersweet (Celastrus orbiculata,) coltsfoot (Tussilago farfara), and narrowleaf bittercress (Cardamine impatiens). Appearance Cardamine impatiens is an herbaceous plant which can be an annual or biennial. Other names are ‘lambs cress’, ‘spring cress’, and ‘hairy bittercress’. Following Narrowleaf bittercress: herbaceous annual invading forested areas along rivers in eastern Minnesota; considered an “early detection” species with limited distribution in the state and designated as a “prohibited, control” weed. A systemic herbicide like glyphosate or triclopyr may be applied to the leaves at any time of the year, as long as the temperature is above 50 degrees Fahrenheit Among these are Narrowleaf bittercress ( Impatiens capensis ) and Burningbush ( Euonymus alatus ). Today I was looking at the MISIN list of invasive species and saw a request for documentation on this plant with the UM Herbarium. Other species have been target for 'early detection' control measures. Control Recommendations - treat before fruit/seed maturation Foliar Spray: FS-2 • Glyphosate 3.00% • Please see our Herbicide Use Suggestions and Mixing Guide for more information • Treatment recommended from mid fall through late winter to avoid damaging … Information in the database reflects scientific literature review, consultation with experts in the field, and user input. Apply early (between December and March 1) before the weeds get big. Plants with flowers and/or seed heads should be bagged and disposed. Small infestations can be hand-pulled easily. † NAP’s preferred method of control is hand-pulling. The root system is shallow and it hand pulls easily, but herbicide is recommended for larger infestations. Chemical: Bittercress is resistant to many types of herbicide. 625 Robert Street North Saint Paul, MN 55155-2538. Controlled are: Common barberry, Narrowleaf bittercress, Plumeless thistle, Spotted knapweed, Canada thistle, Leafy spurge, Purple loosestrife, Wild parsnip, and Common tansy, Bohemian knotweed, Giant knotweed, and Japanese knotweed. Leaves have 6-20, sharply-toothed leaflets. Native to Eurasia, it was first reported in New England in the Blooms May to August. It is an erect, smooth, shiny green, 6"- 31" tall biennial. […] It can grow to be 2 ft. (0.6 m) in height. • Narrowleaf Bittercress Cardamine impatiens L. ... means of control is to prevent their spread by prohibiting the importation, sale, and transportation of their propagating parts in the state except as allowed by Minnesota Statutes, Section 18.82. 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