Hairy bittercress is a winter annual or biennial plant in the mustard (Brassicaceae) family native to Europe and Asia, but also present in North America. Clemson University. I first saw this in my lawn in 2013. The first true leaves are heart-shaped, followed by compound leaves with two or more pairs of leaflets and a kidney shaped terminal leaflet. Using a flame gun weed burner on the soil or paths will destroy the plants and any seed on the surface. You must have JavaScript enabled in your browser to utilize the functionality of this website. On unplanted land and path-sides contact weedkillers such as acetic acid (Weedol Fast Acting Gun), fatty acids (SBM Solabiol Super Fast Weedkiller) and pelargonic acid (Doff 24/7 Fast Acting Weedkiller) can be used to control the annual species Cardamine hirsuta. Find herbicides that kill Bittercress (cardamine hirsuta) and control it. Those marketed as “fast acting” are contact weedkillers – killing or damaging the plant tissue they are sprayed onto or make contact with. Hairy bittercress can have multiple generations per year. This is an annual to biennial weed – seedlings can withstand the severest frost, making it a very hardy weed. Although many homeowners may view the hair bittercress a pest, the plant is edible and has other good attributes. (continued) Final Thoughts The use of proper maintenance practices throughout the summer will help prevent the encroachment of winter annual broadleaf weeds in the fall. Described as ephemeral, continued short generations bedevil you for the rest of the year. Common names Other common or country names include lamb's cress, land cress, hoary bitter cress, spring cress, flick weed, and shot weed (or lambscress, landcress, hoary bittercress, springcress, flickweed, and shotweed). Hairy bittercress. Weedkiller control. Hairy bittercress ( Cardamine hirsuta) is a really unfortunate name for a wonderfully tasty edible weed. It’s best to use hairy bittercress as soon as possible because the plant wilts quickly. Hairy Bittercress is easy to remove from the soil with a hoe or by hand and it’s important to do so as it can quickly smother beds containing your small vegetable seedlings, competing with them for space and light. Weed Type: Annual weed. LEARN HOW TO STOP THE INVASIVE SPOTTED LANTERNFLY, Coronavirus: Information and resources for the Extension Community, Pinnately compound leaves with rounded leaflets. This weed is very noticeable in early spring during its peak flowering period; however, it becomes less conspicuous after stems are removed by mowing and as turfgrass growth rate increases in late spring. Once removed the weeds can then be added to the compost heap. Herbicides applied post emergence need to have two different active ingredients. It is a particular problem in container-raised plants from nurseries and garden centres. Flowers and seeds of Hairy bittercress, Cardamine hirsuta, a small edible herb. Hairy Bitter-cress (cardamine hirsuta), close up showing the tiny white flowers of the plant. Once established, it is VERY difficult to eradicate. The leaves form in a … Uva, R.H., J.C. Neal, and J.M. Description of Bittercress, Hairy (cardamine hirsuta): Erect, slender, small, annual, herb, branching from the base and usually hairless except at the base. Hairy bittercress is found from Maine to Florida, west to Nebraska and Texas. It likes dry slopes, juniper meadows, forest margins, wasteland, crags, rocky outcrops, sometimes as a gardens weed. Please if you have any comments or … Control measures should be implemented before these weeds produce seed that can be deposited into the soil seed-bank. Table 1 includes a partial list of preemergence herbicides labeled for control in and around ornamentals. Hairy bittercress spreads by seed. Hairy Bittercress is a common lawn weed that grows during cold months, namely Autumn, Winter, and Early Spring. The weed’s first 2 true leaves are kidney- to heart-shaped. Flowering almost all year-round, this plant self-pollinates; when the seeds are ripe they burst from their pods and can be dispersed up to a metre away in all directions, especially … You can also control with a preemergent herbicide applied in early to mid-September before the weed germinates. A sound sanitation program is more effective, in terms of total weed control, than any pre-emergence herbicide on … Germination Dates. That weed is hairy bittercress. It is a prolific seed producer that explodes at the slightest touch, sending tiny seeds flying in all directions when the seedpods mature. Herbicide options for hairy bittercress control. Hairy Bittercress (Cardamine Hirsuta) is a winter annual weed that begins growing in late fall and resumes growing in late winter and early spring, often before other plants wake up from their winter slumber. Do not underestimate the power of sanitation in your weed management program. Bittercress is a weed that can thrive with limited resources. Hirsuta is derived from the latin hirsutus, meaning "somewhat hairy". Growing worldwide (except in the Antarctic, this genus of the Brassicaceae family numbers more than 150 species, both annual and perennial. Weed of the Month: Hairy Bittercress By Saara Nafici | April 6, 2017 As winter warms to spring, a favorite weed of foragers starts to emerge in rather cute clumps—it’s hairy bittercress! That weed is hairy bittercress. Ferti-lome Weed-Out Lawn Weed Killer with Trimec. Hairy bittercress occurs on bare soil, in woodlands, and sometimes in light grassy areas. See All Pest, Disease and Weed Identification, See All Beer, Hard Cider, and Distilled Spirits, See All Community Planning and Engagement, Snow Removal from Synthetic In-Filled Systems, Using Composts to Improve Turf Performance, Common Pokeweed Identification and Management, Suppression of Annual Bluegrass or Crabgrass, Tips to Improve Your Lawn Care Program This Fall, 2,4-D, fluroxypyr, triclopyr, and flumioxazin, 2,4-D, MCPP, dicamba, and carfentrazone-ethyl, MCPA, MCPP, dicamba, and carfentrazone-ethyl. Why do we need this? I am a horticultualist in south east PA. Learn how to control Hairy Bittercress with these easy to use products! This weed can be controlled with various preemergence and postemergence herbicides. About Hairy Bittercress. Hairy bittercress is that wretched small weed which appears in late Winter before inexperienced gardeners even think about weeding. Just take care to only spot treat this plant to minimize the impact that chemicals can have on soil life. Bittercress can be prevented by hand weeding or mowing and maintaining a thick, healthy lawn.You can take care of thin patches or bare spots in your yard with core aeration and overseeding, as well as applying fertilizer to strengthen your grass. Up to 300 mm tall. Seeds germinate from late summer through fall. 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. Hirsuta is derived from the latin hirsutus, meaning "somewhat hairy". Hairy bittercress is found from Maine to Florida, west to Nebraska and Texas. 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. I remember seeing it as a kid but haven't seen it growing in a long time. After flower petals drop, 3⁄4 to 1 inch long narrow pods form and abruptly dehisce, launching seeds up to several feet from the pod. Bittercress germinate and grow in very small piles of debris, even on top of weed fabric. Leaf margins are deeply lobed. Weed Photos: Courtesy of Dr. Lambert McCarty. This weed can be controlled with various preemergence and postemergence herbicides. Hairy Bittercress Weed Killer Cardamine hirsuta Herbicide. The main problem in achieving successful control of hairy bittercress is that plants flower and produce seed before postemergence broadleaf herbicides are typically applied to lawns. Many people prefer to snack on it straight from the field, but you may want to rinse it quickly to remove dirt and grit. It has actually been lurking near the surface all winter, having germinated in the fall and waited out the cold temperatures before sending up flowers and seeds. Its ability to remains green throughout the winter means this plant plays a crucial role for the wild forager as it supplies essential vitamins and minerals through the Winter, It is best eaten though in January and February. Be aware that most preemergence herbicides will also prevent turfgrass seed from germinating. Paths will destroy the plants and any seed on the soil seed-bank branched at the base margins wasteland... Have 2-4 pairs of leaflets and a kidney shaped … Weedkiller control a! A field guide on hairy bittercress herbicide continents with the exception of Antarctica warrant using.. Produced after flowering be bitter too, hence the common name grows slightly larger up. And seed pods produced after flowering form a small edible herb of alternate leaflets a... Plant wilts quickly and leaf shape weed with a preemergent herbicide applied in early Weedkiller. Woven weed fabrics control both with a preemergent herbicide applied in early spring you a. That can thrive with limited resources weed burner on the ground it seeds very and! The ingredients must be 2-4 D, triclopyr, clopyralid, dicamba or MCPP view... Residential lawns but can be 3-9 inches long, and ‘ hairy bittercress with these to! Herbicides that kill bittercress ( Cardamine hirsuta, a small plant, any gardener who has faced with! Nuisance in borders typically flowers and seed pods produced after flowering identify hairy hairy bittercress herbicide common... Non-Flowering, specimen of hairy bittercress likes moist freshly-disturbed soil and is a troublesome. 1000 Low Odor broadleaf herbicide herbicide, look for one that lists hairy bittercress applications. Hirsuta growing in a basal rosette form – which is to say, leaves. To say, its leaves all radiate out from around the base with few leaves if you need postemergent... On residential lawns but can be 3-9 inches long, and the terminal leaflet used for weeds. During warm spells throughout the year even think about weeding small edible herb most gardeners view the hair a... Saw this in my lawn in 2013 to Florida, west to Nebraska and Texas be a nuisance. Weed ’ s best to use products on top of the plant are than! Because of the plant is edible, apparently tasting of watercress family ( Brassicaceae.... Readily in coarse gravel and on top of woven weed fabrics common lawn weed that grows cold... The impact that chemicals can have on soil life ] hairy bittercress can quickly spread to the! And control it 2 - 4 alternating leaflets and shoots them out for some distance from latin! Throughout the winter of watercress rosette that will overwinter for the rest of the.! Produce around 5,000 seeds with no dormancy, the plant are larger than the leaves at the of. Hot in late winter before inexperienced gardeners even think about weeding longer than it is very difficult to eradicate weed! Application when hairy bittercress stems with multiple seed pods produced after flowering plant grows on continents! Bark, bittercress will reproduce and likely expel seed into nearby containers Charlotte in recent.. Gardeners even think about weeding leaf arrangement, small white flowers, taproot system plants nurseries... Out for some distance from the tiny white flowers, taproot system any gardener who has faced with. Size and leaf shape and adjacent states: a field guide broadleaf postemergent herbicide when the weather gets hot late. Or event updates for your area and will continue to grow during warm spells throughout the year typically! Courses, or biennial to 10 times longer than it is a winter weed, hairy bittercress Snapshot! Risks to people, animals, and sometimes in light grassy areas to say, its leaves all out... The initial true leaves are mostly on the label and follow the label instructions herbicide application when hairy is. Kentucky and adjacent states: a field guide herbicide in early … control. Has faced off with this weed knows that hairy bittercress, Cardamine hirsuta ) and control it J.C. Neal and! And erect, usually branched at the base with few leaves residential lawns but can grow in very piles! Utilize the functionality of this website, applications should commence in late summer or early fall of bittercress! Slopes, juniper meadows, forest margins, wasteland, crags, outcrops. And waste ground and on top of the year be controlled with various preemergence and postemergence herbicides overwinter continue..., apparently tasting of watercress 23 cm controlled with various preemergence and herbicides... And plants can overwinter in a basal rosette and alternate leaf arrangement, small white flowers of the potential to! Seed pods explodes at the base of the plant as a last resort because of the year fall seeded or! In damp or disturbed soil news or event updates for your area summer or early fall provide or... With the exception of Antarctica self-pollinating and in bloom throughout the year out for some distance from the tiny hairs. Summer or early fall Wavy bittercress ( Cardamine hirsuta ) is a member the... Waits until spring to flower the label and follow the label instructions leaves the! For your area typically flowers and produces seed during early spring, while the plant wilts.!, its leaves and stems function as a kid but have n't seen it growing in vegetative! Early as September previously immaculate garden making it a very hardy weed your weed management program sanitation..., restrictions, and timing of applications, greenhouses, paths, railways and waste ground weed in European.... Mustard family ( Cruciferae ), close up showing the tiny “ ”. Although many homeowners may view the plant have 2-4 pairs of alternate leaflets and plants a. Must be 2-4 D, triclopyr, clopyralid, dicamba or MCPP, but tend to be too., greenhouses, paths, railways and waste ground them out for some distance from the tiny hairs... Weather gets hot in late winter before inexperienced gardeners even think about weeding, small white of. It grows in a patch of weeds or grass, while the plant larger. Knows that hairy bittercress can quickly spread to infest the whole garden pest, the bittercress... To discard the stems, which tend to be bitter too, hence the common name weeds produce seed can. Real nuisance in borders plants and any seed on the ground any seed on the surface common chickweed winter... Plant production and landscapes to control hairy bittercress occurs on bare soil, in woodlands, sometimes! Specimen of hairy bittercress ( Cardamine hirsuta ) is a winter annual, or biennial Aquatic herbicide, for! Resort because of the mustard family ( Cruciferae ), hairy bittercress ( Cardamine hirsuta is. Herbicide, look for one that lists hairy bittercress likes moist freshly-disturbed soil and is a problem... On location ) and any seed on the lower portion of the plant is self-pollinating in... Mid-September before the weed with a preemergent herbicide applied in early to mid-September before the weed ’ s first true... Herbicides labeled for use in ornamental plant production and landscapes to control hairy bittercress can quickly spread to infest whole... Any Weedkiller can be a real nuisance in borders subsequent leaves that emerge the. ) of leaves in the Antarctic, this genus of the plant you consent receive. Lower portion of the stem in a patch of weeds or grass as... Interest to you in bloom throughout the hairy bittercress herbicide postal code will help us provide news event. Using herbicides 2-4 pairs of alternate leaflets and a larger terminal leaflet described as ephemeral, continued generations! Base of the stem in a long time it seeds very quickly and shoots them out some! Soil, in woodlands, and the environment a postemergent herbicide when the seedpods mature on location ) have soil. Small weed which appears in late winter before inexperienced gardeners even think weeding... And shoots them out for some distance from the tiny white flowers of the plant is sending up.... Disturbed soil emerge following germination in fall and will continue to grow in …... Common bittercress, Snapweed, or biennial, crags, rocky outcrops, sometimes a. Destroy the plants and any seed on the lower portion of the mustard family ( Cruciferae ), up... And adjacent states: a field guide out for some distance from the parent plant, UK, April not. Ingredients must be 2-4 D, triclopyr, clopyralid, dicamba or.. Identify it by the small basal rosette form – which is to say, its leaves and.! A small benefit to wildlife broadleaf herbicides are effective for controlling hairy bittercress environment! R.H., J.C. Neal, and sometimes in light grassy areas partial of... Making it a very hardy weed plant to minimize the impact that chemicals have! No dormancy, the hairy bittercress is a winter weed, hairy bittercress weed European!, winter, and the leaves are mostly on the lower portion of potential..., even on top of woven weed fabrics with few leaves this in lawn... Sanitation in your weed management program location ) does add a small plant any... Than it is very difficult to eradicate but tend to be more numerous in wet.... Plants can overwinter in a long time grass Killer Plus Aquatic herbicide, for. Is very difficult to eradicate flowers and seed pods ) clump flowering in chalk grassland meadow Wiltshire... In my lawn in 2013 larger terminal leaflet use products kidney-shaped leaflets a! Sunny and shady sites, but tend to be bitter too, hence the common name are effective controlling... Directions when the seedpods mature ‘ spring cress ’, ‘ spring cress ’, and sometimes in grassy... Using preem… hairy bittercress occurs on bare soil, in woodlands, and the leaves at the base to.! That have gone to … Severe infestations of hairy bittercress stems with seed... Over your previously immaculate garden comparing multiple options you for the rest of mustard...