Bittercress may be introduced as seed, seedlings or as plants in … It is usually annual or biennial but occasionally perennial. The taxon referred to here as Cardamine flexuosa With. The leaves are very similar to those of Hairy Bittercress, but are usually a brighter green in colour, often they are missing - probably because they have been eaten by slugs. Hairy bittercress is a hardy, frost-tolerant plant that remains green throughout the winter in most climates. A related introduced weed, New Zealand bittercress, C. corymbosa, has become troublesome in polytunnels. Leaves up to 130 mm long, deeply lobed; moderatey hairy to hairless, somewhat glossy. 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. Lesser knotweed spreads readily from rhizome (root) … Harvesting Hairy Bittercress. Tiny white flowers appear on upright, wiry stems in early spring and continue to bloom until autumn. hairy bittercress from Wakari, Dunedin 9010, New Zealand on April 22, 2020 at 03:28 PM by John Barkla. New Zealand bittercress is reported as new to the United States. Foraging for hairy bittercress can be as simple as walking out into your backyard. New Zealand Bittercress. Inflorescence is a raceme, sometimes branched, each raceme 6–12-flowered; flowering stems to 400 mm or more tall. The whole plant remains very flat except for the mature seed pods which stand about 3 to 4 … Little is known about potential impacts in New Zealand, but in Britain it is a vigorous coloniser that grows in dense patches and suppresses other plants. The nursery tracked the shipment of contaminated plants to a wholesale … To harvest hairy … Four species of bittercress were detected in the nursery industry of the United States, including New Zealand bittercress, hairy bittercress, flexuous bittercress, and little bittercress. Bitter cress , land cress , lamb’s cress , flick weed This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 New Zealand License . In urban garden Perennial herb, a single rosette or with off-sets (short lateral branches). Cardamine hirsuta, commonly called hairy bittercress, is an annual or biennial member of the mustard family (Brassicaceae), and is edible as a bitter herb. Left unchecked, hairy bittercress can quickly spread to infest the whole garden. Waved bittercress, C. flexuosa, closely resembles hairy bittercress and is also variable in habit. ... Take iNaturalist NZ mobile with the iNaturalist mobile app: Help us … Lesser knotweed is a perennial herb that can grow to one metre tall. It has hairy leaves and bunches of white or pink flowers. It is a common weed in moist areas and has been transported to many new regions by humans. While collecting specimens to determine what Cardamine species occur in the nursery trade, New Zealand bittercress was discovered in a container nursery in Wilkes County, North Carolina. Hairy bittercress is variable in size and leaf shape. Tags: Cardamine hirsute, bittercress, Hairy Bittercress, . Of the same family as cuckoo cress, Cardamine hirsuta is also commonly known as hairy bittercress and flick seed (because it flicks its seeds into the air). Related introduced weed, new Zealand bittercress, hairy bittercress and is also variable in size and leaf shape flowering! And bunches of white or pink flowers to 400 mm or more tall harvest hairy hairy... 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