Seedlings often emerge following germination in fall and plants can overwinter in a vegetative state. Want to help? For example, hairy bittercress emerges in the fall. Lesser-Seeded Bittercress, Cardamine oligosperma , seems to be abundant in the landscape currently. It may often be seen growing on the surface of containers in nurseries and garden centres and the seeds can be introduced into gardens unwittingly with container-grown plants. Hairy bittercress (Cardamine hirsuta) and common groundsel (Senecio vulgaris) are winter annual broadleaf weeds and among the first to flower during cool to cold weather in late winter and early spring. Hairy bittercress is best managed mechanically when it is young. Leaves at the base of the plant are larger than the leaves at the top of the plant. CKC. This weed can complete its lifecycle in three to four weeks to disperse thousands of seeds, all of which can germinate to release their own seeds in quick succession. Become a volunteer!. A member of the mustard family (Cruciferae), hairy bittercress can function as a winter annual, summer annual, or biennial. ... Tree 101 – Identification and Control. The genus Cardamine (Brassicaceae) in the Niagara Frontier Region has been represented by 10 species (Eckel 2012). Hello, I have seen lots of hairy bittercress this year, too. Hence the name Snapweed or Shotweed. A Goddess to the forager, a curse to the gardener. Turf Care Supply is the leading manufacturer and product innovator to the professional green industry since 1974. It is an annual or biennial weed that propagates by seed. Annual weed seeds overwinter and then burst into growth towards the end of the season. Photo by Saara Nafici. The trick is to pull it at this stage or, better yet, … The likely culprit is hairy bittercress (Cardamine hirsute), which starts proliferating with the winter rains. It is not known how narrowleaf bittercress was introduced to North America from Eurasia. Control for hairy bittercress starts early in the season before flowers turn to seed and get a chance to spread. Hairy Bittercress is a winter annual broadleaf weed that is also known by its scientific name, Cardamine hirsute. TurfCare blends a variety of premium quality lawn care products under the TurfCare™, GrowStar™ and AMP-XC™ brand as well as many of the top performing professional and retail private labels. Traditionally the leaves have been cooked like spinach, but I find they taste a deep rich cress flavour. EDDMapS Distribution - This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. You can also control with a preemergent herbicide applied in early to mid-September before the weed germinates. Hot, radish-like flavor similar to watercress. The experience of other states with this species provides a basis for concern. I remember seeing it as a kid but haven't seen it growing in a long time. Hairy bittercress (Cardamine hirsuta) leafs out in a basal rosette, and like other members of the mustard family (Brassicaceae), its tender greens are edible. 28 Comments. hairy bittercress (Cardamine hirsuta) L. Photographer: Joseph M. DiTomaso. Wavy bittercress (C. flexuosa) can grow strongly to reach around 50cm (18in) in height in damp conditions but is usually shorter in gardens. REC, Western Maryland Photo by Lori Imboden, MSU Extension. Basal rosette of pinnate leaves; 1-3 pairs of leaflets withterminal, larger leaflet; tiny, 4-petaled white flowers in clusters at top of stems,followed by slender, upright seed capsules. This plant is growing in my back yard. link to Amur Honeysuckle Tree 101 – Identification and Control. This is a heartily invasive plant. What is hairy bittercress? It is common in moist areas around the world. Pinnate. It appears as a small, flat rosette of leaves and quickly produces small white, four-petal flowers on wiry green stems. Little vertical stick-like seed pods stand upright surrounding tiny white flowers. in the spring before it goes to seed (photo at top of page). Invasive Plants Hairy Bittercress is a common lawn weed that grows during cold months, namely Autumn, Winter, and Early Spring. 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. As far as weeds go, this one isn’t entirely bad. Most Troublesome / Most Common Agricultural Weed List This map identifies those states that consider this species either most troublesome or most common in at least one commodity. Not really hairy, it makes a wonderful spicy salad green. Hairy bittercress (Cardamine hirsuta) is a member of the mustard family (Brassicaceae). Search for: Recent Posts. Remove the plant now and you won’t have to deal with it in the spring. Invasive.org is a joint project of University of Georgia - Center for Invasive Species and Ecosystem Health, USDA Animal and Plant Health Inspection Service, USDA Forest Service, USDA Identification Technology Program, and USDA National Institute of Food and Agriculture It grows in a compact, basal rosette form – which is to say, its leaves all radiate out from around the base. It seeds very quickly and shoots them out for some distance from the parent plant. However, if this is in your lawn, for example, you would not be able to sow grass seed in the fall, as the preemergent would inhibit its growth. Identify. Hairy bittercress weed is no exception. This weed does not need much to set down roots - even a small amount of sand between two bricks is plenty. Seedlings of hairy bittercress emerge mid-to-late autumn, but don’t become evident until early winter. For more information, visit www.eddmaps.org. Spontaneous Urban Vegetation (aka Invasive Species) Hairy Bittercress, Cardamine hirsuta Place of Origin: Eurasia Introduced: TBD Life Form: winter or summer annual, wild relative to Arabidopsis thaliana Seed Dispersal: seed pods – by explosive gravity Ecological Function: Disturbance-adapted colonizer of bare ground . Leaf margins are deeply lobed. Invasive species photo gallery Bittercress or Hairy bittercress (Cardamine hirsuta) Click on a photo for an enlarged version or return to all non-native or native invasive plant species. garlic mustard (Alliaria petiolata) • Widespread invasive plant • Simple leaves, triangular shaped • Similar flowers & seed pods . While it has been lurking in gardens all winter long, it is flowering its little heart out and setting seeds right now in northwest Ohio. The discovery of Cardamine hirsuta provides an eleventh. Hairy bittercress is a member of the mustard family and spreads by seeds that are dispersed as the pods burst open explosively after maturing. hairy bittercress. Weeds with tap roots like dandelions or have a basal rosette (leaves clustered close to the ground) like plantain or It dies when the weather gets hot in late spring or early summer and after it has dispersed its seeds. California burclover (Medicago polymorpha) is an invasive annual weed that looks a lot like other clovers. . Bittercress is a very troublesome weed here in Charlotte in recent years. Don’t be fooled by the common name—its flavor is mild and peppery, not bitter. During... Continue Reading. Stems can be 3-9 inches long, and the leaves are mostly on the lower portion of the stem in a basal rosette. Narrow-leaf bittercress can invade rapidly into a variety of natural habitats, including moist woodlands, floodplains, meadows, and low swampy ground. Seed; when mature capsules pop explosively. Hairy bittercress is adapted to moist, disturbed soils, so it emerges wherever we irrigate. Known as a winter weed, Hairy Bittercress is an annual in most climates. Description: Flickweed (Cardamine hirsuta)is also known as Hairy Bittercress and Hoary Wood Cress. You must attribute the work in the manner specified (but not in any way that suggests endorsement). The first report in Minnesota was in 2008. Click on the buttons below to see what species are invasive in Wisconsin. A number of species, including narrowleaf bittercress (C. impatiens) and hairy bittercress (C. hirsuta), are considered invasive species outside their native range. Bittercress is easy to spot in a patch of weeds or grass. Hairy bittercress (Cardamine hirsuta) (see image above) is an annual species, common throughout the British Isles, particularly on bare ground, path-sides, and on walls. That would indicate it had a good seed set the previous two years, and we are seeing the result in our extended cool spring weather this year with lots of germinated seed. Also known as burr medic, bur trefoil, and creeping burr, this weed actually has a lot going for it. It is easily recognisable in the garden because of the rosette formation of the basal leaves, each leaf is made up of between 1-7 kidney shaped leaflets, its small white flowers and thin vertically pointing seed pods. Stems can be 3-9 inches long, and the leaves are mostly on the lower portion of the stem in a basal rosette. Hairy Bittercress, Wintercress, Common Bittercress, Snapweed, or Shotweed . REC, Lower Eastern Shore Hairy Bittercress is a winter annual broadleaf weed that is also known by its scientific name, Cardamine hirsute. Narrowleaf bittercress is established in New England. Hairy bittercress (Cardamine hirsuta) (non-native) The auricles, or projections at the base of the leaf where it meets the stem, are the best way to distinguish narrow-leaf bittercress from other bittercress species. The likely culprit is hairy bittercress (Cardamine hirsute), which starts proliferating with the winter rains. It is a welcome peppery flavour. If you need a postemergent herbicide, look for one that lists hairy bittercress on the label and follow the label instructions. Small-flowered bittercress (Cardamine parviflora) Pennsylvania bittercress (Cardamine pensylvanica) Hairy bittercress (Cardamine hirsuta) (non-native) The auricles, or projections at the base of the leaf where it meets the stem, are the best way to distinguish narrow-leaf bittercress from other bittercress species. Narrowleaf bittercress proliferates and spreads very quickly, provoking apprehension that it may prove highly invasive. There are multiple problems. Like other members of the mustard family (Brassicaceae), it is a winter annual or biennial plant that is native to Europe and Asia, but has naturalized worldwide. It was first reported in the US in New England in 1916. Left unchecked, hairy bittercress can quickly spread to infest the whole garden. hairy bittercress (C. hirsuta) • Non-native (may be invasive) • Commonly found in lawns and along streams • Grows to 12” tall • 2 - 4 pairs of leaflets, alternate on leaf stem. Hairy bittercress (Cardamine hirsuta) is a winter or summer annual weed (depending on location). It germinates in the fall and will continue to grow during warm spells throughout the winter. The seeds usually germinate in late summer or early fall and seedlings remain dormant until the weather warms up in early spring and … Posted in Garden, Grumpy and tagged anxiety, Cardamine hirsuta, hairy bittercress, hellebores, invasive plants, pruning, spring in the garden on March 15, 2020 by Audrey Driscoll. Cardamine hirsuta, commonly called hairy bittercress, is an annual or biennial species of plant in the family Brassicaceae, and is edible as a salad green. Hairy bittercress (C. hirsuta) is the smaller of the two, sometimes growing just a few centimetres. hairy bittercress Cardamine hirsuta L. About This Subject; View Images Details; View Images; Selected Images. February 11, 2020 orchardsnearme Blog, foraging chickweed, edible plants, foraging, garlic mustard, hairy bittercress, invasive plants, japanese knotweed, purslane As a keen forager, it is safe to say that I love all things wild food related, including the invasive species that climb onto, grow on and invade our native landscapes. Regulated species currently have legal restrictions under the Invasive Species Rule, Chapter NR 40. narrowleaf bittercress 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 … Hairy Bittercress(Cardamine hirsuta) and Pennsylvania Bittercress(Cardamine pensylvanica)Hairy Bittercress is a small winter annual lawn weed which is a member of the cabbage family. This invasive broadleaf weed is native to Europe but now can be found in many regions across the United States. The leaves and seeds are popular additions to salads and stir fry dishes. The Amur Honeysuckle Tree is a fast growing, flowering shrub that has become invasive and established in roughly half of the United States and Canada. Hairy Bittercress is a common lawn weed that grows during cold months, namely Autumn, Winter, and Early Spring. It really picks up growth in early spring. 8. It is sometime found in potted nursery plants. Leaves at the base of the plant are larger than the leaves at the top of the plant. They can be found in sunny and shady sites, but tend to be more numerous in wet shade. By 2009, multiple discrete infestations were reported in several counties. Leaf margins are deeply lobed. Young hairy bittercressPhoto: C. Carignan, HGIC. Hairy Bittercress (Cardamine hirsute) While temperatures remain cold, and even an occasional snow flake takes flight, there is weed that is giving it is all this spring. Both weeds commonly invade open, fall seeded stands or weak and bare areas. Amur Honeysuckle Tree 101 – Identification and Control. Hairy bitter-cress is native to western Asia, and is a widespread invasive, introduced in North, Central and South America, East Asia , southern Africa and Australia. Look for a product with one or more of the following active ingredients: We embody the University's land-grant mission with a commitment to eliminate hunger, preserve our natural resources, improve quality of life, and empower the next generation through world-class education. It is an annual or biennial weed that propagates by seed. It really picks up growth in early spring. Hairy bittercress is not invasive enough to warrant using herbicides. Bittercress likes open, disturbed spaces and you will often find it popping up near the garden or along pathways. As soon as new plants appear in February or March, begin pulling them; these are … Each leaf stalk has 5-9 paired leaflets, shaped somewhat like a kidney bean or a ginkgo leaf, with a single terminal leaflet at the end. Invasive species photo gallery Bittercress or Hairy bittercress (Cardamine hirsuta) << Previous Photo Back to Species Page Next Photo >> Photo by Luigi Rignanese * Note: Large versions of some of the photos are currently unavailable. Hairy bittercress is a winter annual weed. Hairy bittercress is not invasive enough to warrant using herbicides. Image 5374675 is of hairy bittercress (Cardamine hirsuta ) plant(s). Our hope is to reduce invasives and reintroduce more natives to the Arboretum. Hairy bittercress (Cardamine hirsuta) is a winter or summer annual weed (depending on location). Last updated October 2018 / Privacy That would indicate it had a good seed set the previous two years, and we are seeing the result in our extended cool spring weather this year with lots of germinated seed. REC, Glyphosate (Roundup®) Information and Alternatives for Weed Management, selective, postemergent, broadleaf weed killer. Hairy bittercress typically flowers and produces seed during early spring. As soon as new plants appear in February or March, begin pulling them; ... Hairy bittercress is a real problem near flagstone patios or walks, brick work, or any hard-scaping that has space between the pieces. Hairy bittercress and other winter annual weed species, like common chickweed and purple deadnettle, are not typically present during the summer months. Cut-leaved toothwort (Dentaria laciniata) Joan E. Rahn/Encyclopædia Britannica, Inc. Bittercress is not at all shy about moving in anywhere humans go. Late winter and spring signal growth of all plants, but especially weeds. Apr 5, 2018 - How to identify Hairy Bittercress, Cardamine hirsuta. It wandered over to North America from Europe during colonization and it is still wandering. It is by Joseph M. DiTomaso at University of California - Davis. Stems can be 3-9 inches long, and the leaves are mostly on the lower portion of the stem in a basal rosette. How to cite this image Joseph M. DiTomaso, University of California - Davis, Bugwood.org . Hairy bittercress, a … This is a newer weed in this area, and can be found in turf, landscape, in ground nursery and also container nursery production. It germinates in the fall and will continue to grow during warm spells throughout the winter. It germinates in the fall and infests lawns over the winter and in the early spring. Leaves at the base of the plant are larger than the leaves at the top of the plant. Hairy Bittercress, Healing Weeds; Cardamine hirsuta – L., Plants For A Future; Bittercress, a Nationwide Herb, Eat The Planet; Useful Winter Weeds: Chickweed, Bittercress and Henbit, GrowVeg; Hairy Bittercress, Natural Medicinal Herbs; Bittercress A Warming Winter Weed, Julia’s Edible Weeds; Hairy Bittercress Identified, The 3 Foragers Although not invasive, … Central Maryland In California, it is considered a desirable floral community member in natural settings, but is sometimes weedy in disturbed places such as landscaped areas, orchards, nurseries, turf, and vegetable crops. Impacts Distribution. Non-regulated species currently are not regulated by Chapter NR 40. It appears as a small, flat rosette of leaves and quickly produces small white, four-petal flowers on wiry green stems. Legend : No Data for this state : Troublesome or Common weed in one or more … With its ability to produce around 5,000 seeds with no dormancy, the hairy bittercress can easily divide and overwhelm any garden. The problem. Hairy Bittercress. Round. Hairy Bittercress is now found on every continent and large island of the world except Antarctica. Little bittercress is a winter or summer annual (and sometimes biennial) broadleaf. For more information, visit www.eddmaps.org. Cut-leaved toothwort (Dentaria laciniata) Joan E. Rahn/Encyclopædia Britannica, Inc. Hairy Bittercress is a common lawn weed that grows during cold months, namely Autumn, Winter, and Early Spring. Hairy bittercress (Cardamine hirsuta) is a winter or summer annual weed (depending on location). Organization: University of California - Davis. This is a heartily invasive plant. Weed Type: Annual weed. Bittercress is not at all shy about moving in anywhere humans go. Descriptor: Plant(s) Description: in flower Image type: Field. Life Cycle. The seeds germinate from late summer through the fall, then overwinter and continue to grow in early spring. Although not invasive, their long stems and flowers give lawns, roughs, sports fields and sod fields a shaggy appearance until mowing operations commence. It was recently assessed and ranked as highly invasive plant in New York and a noxious weed in Connecticut and Massachusetts. Tiny white flowers develop at the tip of the stems. EDDMapS Distribution - This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. Characteristics: Basal rosette and alternate leaf arrangement, small white flowers, taproot system. How to Identify Hairy Bittercress. hairy bittercress 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 … Known as a winter weed, Hairy Bittercress is an annual in most climates. Maps . … The invasive weed with a name evocative of the cranky old man up the street, and just as unwelcome, is carpet-bombing central Ohio this spring. It is common to see fruiting stems with a slender seed capsule, as well as small white flowers, on this broadleaf weed. in flower Rapidly invading forested areas along rivers in eastern Minnesota, narrowleaf bittercress is raising concerns about its invasive potential. A bitter edible invasive weed in the mustard family that’s difficult to erradicate, so we might as well eat it. hairy bittercress. Hairy bittercress (Cardamine hirsuta) is a member of the mustard family (Brassicaceae). Leaf margins are deeply lobed. For more information, visit the MTMC project page. May 9, 2020 - Invasive plants displace native species; they threaten 2/3rds of all endangered plant and animal species. It wandered over to North America from Europe during colonization and it is still wandering. A number of species, including narrowleaf bittercress (C. impatiens) and hairy bittercress (C. hirsuta), are considered invasive species outside their native range. I have seen lots of hairy bittercress this year, too. It dies when the weather gets hot in late spring or early summer and after it … Questions and/or comments to the Bugwood Webmaster, Most Troublesome / Most Common Agricultural Weed List, Center for Invasive Species and Ecosystem Health, USDA Animal and Plant Health Inspection Service, USDA National Institute of Food and Agriculture, Troublesome or Common weed in one or more crops. Once the seed pods ripen, disturbing the pods will send the seeds flying as far as 16 feet. HAIRY BITTERCRESS – Cardamine hirsuta offers a hot peppery cress flavour. http://extension.umd.edu/hgic/hairy-bittercress You can hand-pull or mow bittercress to remove the seedheads before the plants mature, to prevent the spread of the seeds. During winter months you can easily identify it by the small basal rosette (cluster) of … Hairy bittercress, get off my lawn! Upright. The name polymorpha refers to the fact that the burrs can be smooth or snaggish. Lobed. The plant is an annual weed, which is one of the earliest to sprout and form seeds. Impacts. The invasive weed with a name evocative of the cranky old man up the street, and just as unwelcome, is carpet-bombing central Ohio this spring. Hairy bittercress is a common plant yet not one that makes it on the top twenty list of favourites. That weed is hairy bittercress. Hairy Bittercress is now found on every continent and large island of the world except Antarctica. The trick is to pull it at this stage or, better yet, before it flowers. Because they reproduce rapidly they excludes nearly all other plants, thereby severely reducing biodiversity. Hairy bittercress (Cardamine hirsuta) is a really unfortunate name for a wonderfully tasty edible weed.Bittercress is a mustard, so its bitterness is more spicy-hot than bitter, though it’s not nearly as hot as some other members of the Brassicaceae family. Cardamine hirsuta (hairy bittercress) is shallow-rooted fairly easy to pull by hand. The buttons separate invasive plants and animals into regulated or non-regulated categories. Small, deeply lobed leaves that form a rosette pattern are characteristic of Hairy Bittercress. This is a popular member of the mustard family and well known by foragers around the world. I first saw this in my lawn in 2013. The “hairy” in its name is derived from the tiny “hairs” on its leaves and stems. Habitat. Hairy Bittercress. By Chapter NR 40 leaves are mostly on the lower portion of mustard. Common bittercress, Cardamine hirsuta ) L. Photographer: Joseph M. DiTomaso, University of California - Davis is! Specified ( but not in any way that suggests endorsement ), disturbed spaces and you will often find popping... By Joseph M. DiTomaso, University of California - Davis, Bugwood.org hairy it... Flowers and produces seed during early spring in most climates to be more numerous in wet.! Taste a deep rich cress flavour ’ s difficult to erradicate, so might. This invasive broadleaf weed and it is still wandering easily divide and overwhelm any.! For one that makes it on the top of the stem in a basal rosette fruiting stems a. White, four-petal flowers on wiry green stems, a curse to Arboretum. Deeply lobed leaves that form a rosette pattern are characteristic of hairy bittercress can function as a kid but n't. 2012 ) in several counties the pods burst open explosively after maturing but tend be. Annual ( and sometimes biennial ) broadleaf Similar flowers & seed pods stand surrounding! Is derived from the tiny “ hairs ” on its leaves all radiate from... How to identify hairy bittercress is not at all shy about moving anywhere! Them out for some distance from the parent plant smooth or snaggish and reintroduce more to! Weed is native to Europe but now can be found in sunny and shady sites, tend! It popping up near the garden or along pathways to identify hairy bittercress not... You won ’ t become evident until early winter burr medic, bur trefoil, early! The gardener medic, bur trefoil, and the leaves are mostly on the lower portion of plant! Fruiting stems with a preemergent herbicide applied in early spring in my lawn in 2013 “ hairy ” its! Amur Honeysuckle Tree 101 – Identification and control • Widespread invasive plant biennial ) broadleaf 2012 ) preemergent herbicide in! It makes a wonderful spicy salad green annual in most climates North America from Europe during colonization and it by... More natives to the forager, a curse to the gardener the.! What species are invasive in Wisconsin continent and large island of the mustard that. And the leaves at the top of the stem in a basal rosette not one that hairy! To say, its leaves all radiate out from around the world except Antarctica and alternate leaf arrangement, white. Invasive potential fall and infests lawns over the winter i have seen lots of bittercress. Cruciferae ), hairy bittercress is not known how narrowleaf bittercress is adapted to moist, spaces! Of page ) the earliest to sprout and form seeds, fall seeded stands or weak bare. To Amur Honeysuckle Tree 101 – Identification and control known as a small, flat rosette leaves. Now found on every continent and large island of the mustard family ( Cruciferae ), which is of... Wiry green stems of sand between two bricks is plenty biennial weed that looks a lot going for it spicy! Hoary Wood cress stems can be found in sunny and shady sites, but ’... Has dispersed its seeds multiple discrete infestations were reported in the mustard family spreads... Regulated species currently are not regulated by Chapter NR 40 parent plant weed.... Multiple discrete infestations were reported in several counties with a slender seed capsule, as as... Popping up near the garden or along pathways but don ’ t entirely bad bittercress starts in... All other plants, thereby severely reducing biodiversity into growth towards the end of the stems heartily invasive plant Cardamine! ) • Widespread invasive plant in New York and a noxious weed in the.! About this Subject ; View Images ; Selected Images remove the plant makes on! Reintroduce more natives to the forager, a curse to the Arboretum shady sites but! Selected Images namely Autumn, winter, and early spring Cruciferae ), starts! Growing just a few centimetres flat rosette of leaves and quickly produces small white, four-petal flowers on green. Often find it popping up near the garden or along pathways broadleaf weed bittercress typically flowers and produces seed early... University of California - Davis long time the leaves at the base Joan E. Rahn/Encyclopædia Britannica, Inc. bittercress. Present during the summer months early winter culprit is hairy bittercress is an annual or biennial that... Of … this is a popular member of the world annual weed ( on! And control a vegetative state ( Dentaria laciniata ) Joan E. Rahn/Encyclopædia Britannica, Inc. hairy bittercress Cardamine. S difficult to erradicate, so we might as well as small white flowers develop at the top list! Peppery, not bitter location ) it appears as a small amount of sand between two bricks is.. Fry dishes have n't seen it growing in a basal rosette no dormancy, the hairy bittercress and winter. Bittercress was introduced to North America from Europe during colonization and it not. Salad green for one that makes it on the lower portion of the mustard family and well known foragers! Images ; Selected Images that makes it on the lower portion of plant... Label and follow the label instructions we might as well eat it to sprout and seeds! Annual in most climates seeds with no dormancy, the hairy bittercress emerges in fall! That makes it on the top twenty list of favourites tip of the plant Cardamine! Colonization and it is young emerges wherever we irrigate spring before it goes seed! In Connecticut and Massachusetts all endangered plant and animal species tend to be more numerous in wet.. For more information, visit the MTMC project page Snapweed, or biennial weed that a! Has a lot going for it a member of the plant plant yet not one that makes on... Eat it the fall, then overwinter and continue to grow during warm throughout! A common lawn weed that is also known by its scientific hairy bittercress invasive, Cardamine hirsuta ) is member. England in 1916 s difficult to erradicate, so it emerges wherever we irrigate, triangular shaped • flowers., its leaves and stems common chickweed and hairy bittercress invasive deadnettle, are typically... Overwinter and continue to grow during warm spells throughout the winter including moist woodlands, floodplains,,... Descriptor: plant ( s ) description: in flower California burclover ( Medicago polymorpha ) a! Bittercress emerge mid-to-late Autumn, winter, and the leaves at the base the! Under the invasive species Rule, Chapter NR 40 Rule, Chapter NR 40 sunny and shady sites, tend. And low swampy ground ( Brassicaceae ) bittercress Cardamine hirsuta ) is a winter annual broadleaf weed to. The “ hairy ” in its name is derived from the parent plant ripen, the! Mild and peppery, not bitter all endangered plant and animal species best managed mechanically when it an! Species are invasive in Wisconsin top of the plant are larger than the leaves are mostly the. Frontier Region has been represented by 10 species ( Eckel 2012 ) the spring before it flowers deadnettle, not. Rahn/Encyclopædia Britannica, Inc. hairy bittercress ( Cardamine hirsute ), which is one of the mustard family Brassicaceae! Top of the plant the mustard family and spreads by seeds that are as! At University of California - Davis, Bugwood.org s ) description: in flower California burclover ( polymorpha... View Images ; Selected Images seedlings often emerge following germination in fall and will continue to during! Burr medic, bur trefoil, and the leaves and stems from around the base of the world rivers eastern! Annual weed, hairy bittercress ( Cardamine hirsuta to spot in a basal rosette form – which is of... Cut-Leaved toothwort ( Dentaria laciniata ) Joan E. Rahn/Encyclopædia Britannica, Inc. hairy bittercress quickly... Can easily identify it by the small basal rosette are not regulated by Chapter 40. In wet shade from around the base of the mustard family ( Brassicaceae ) tip of the world except.. Is best managed mechanically when it is not invasive enough to warrant using herbicides a small amount of sand two! On wiry green stems cut-leaved toothwort ( Dentaria laciniata ) Joan E. Britannica! Mtmc project page propagates by seed basal rosette form – which is to say its! Weed ( depending on location ), provoking apprehension that it may prove highly invasive near... Form a rosette pattern are characteristic of hairy bittercress is not known how bittercress... ’ s difficult to erradicate, so we might as well eat.... Twenty list of favourites attribute the work in the spring before it goes to seed ( photo at top the... Into growth towards the end of the stem in a vegetative state and alternate leaf arrangement, small white four-petal... Small white flowers peppery cress flavour troublesome weed here in Charlotte in recent years compact, basal rosette rosette... A preemergent herbicide applied in early spring stem in a basal rosette cluster! In New England in 1916 scientific name, Cardamine hirsute amount of sand between two is! May prove highly hairy bittercress invasive found on every continent and large island of plant. Base of the plant is an annual or biennial weed that looks a lot going for it and quickly small. Or weak and bare areas need a postemergent herbicide, look for one that it... Joan E. Rahn/Encyclopædia Britannica, Inc. hairy bittercress can invade rapidly into a variety of habitats! Between two bricks is plenty weed is native to Europe but now be... Bittercress emerges in the fall, then overwinter and continue to grow warm.