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Summary
Physical Characteristics
Bidens frondosa is a ANNUAL growing to 1.5 m (5ft). It is in flower from July to October, and the seeds ripen from August to October. The species is hermaphrodite (has both male and female organs) and is pollinated by Bees, hover-flies.
Suitable for: light (sandy), medium (loamy) and heavy (clay) soils. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It cannot grow in the shade. It prefers moist soil.
UK Hardiness Map
US Hardiness Map
Synonyms
Habitats
Cultivated Beds;
Edible Uses
Edible Parts: Leaves
Edible Uses:
Young leaves and stems - cooked[173, 177].
References More on Edible Uses
Medicinal Uses
Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.
Urinary
According to Rahman et al. (2011) B. frondosa is potentially a useful source of essential oil extracts with antibacterial and antioxidant properties. Infusions and tinctures of B. frondosa have a wide range of medicinal properties. They can be used for treatment of irritation, inflammation, pain and bleeding of the urinary tract mucosa and are used for benign prostatic hypertrophy and increasing excretion of uric acid and decreasing the risk of gout attacks (Flora of North America, 2014) [1d].
References More on Medicinal Uses
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Other Uses
An Ornamental.
Special Uses
References More on Other Uses
Cultivation details
We have very little information on this species and do not know if it will succeed outdoors in Britain, though judging by its native range it should succeed in most parts of the country when grown as a spring-sown annual. The following notes are based on the general needs of the genus. Succeeds in any moderately fertile moisture-retentive soil in full sun[200].
References Carbon Farming Information and Carbon Sequestration Information
Temperature Converter
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Propagation
Seed - sow early spring in a greenhouse and only just cover the seed. When they are large enough to handle, prick the seedlings out into individual pots and plant them out in May. Alternatively, a sowing in situ in mid to late spring can be tried.
Other Names
If available other names are mentioned here
bur marigold; devil's beggarticks; devil's bootjack; devil's pitchfork; pitchfork weed; spanish needles [teleomorph]; sticktights; tickseed sunflower.
Spanish: cáñamo de agua americano.
French: biden feuillu; bident à fruits noirs.
Chinese: da lang pa cao.
Czech Republic: dvouzubec.
Germany: Dichtbelaubter Zweizahn; Schwartzfrüchtiger.
Hungary: feketés farkasfog.
Italy: forbicina peduncolata.
Netherlands: Zwart tandzaad.
Portugal: erva-rapa.
Sweden: fläderskära.
Native Plant Search
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Found In
Countries where the plant has been found are listed here if the information is available
Canada (Alberta, British Columbia - Introduced, Manitoba, New Brunswick, Newfoundland I, Nova Scotia, Ontario, Prince Edward I., Québec, Saskatchewan); United States (Alabama, Alaska, Aleutian Is., Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming)
Weed Potential
Right plant wrong place. We are currently updating this section.
Please note that a plant may be invasive in one area but may not in your area so it’s worth checking.
The majority of introductions into new countries are intentional, due to the medicinal, herbal and decorative properties ascribed to the species. However, seeds can be accidentally dispersed into new areas as they can adhere firmly to animal fibres such as wool. In Europe B. frondosa has been reported to outcompete and interbreed with native plant species in particular those of the same genus. B. frondosa is classified as an environmental weed in New Zealand [1d].
Conservation Status
IUCN Red List of Threatened Plants Status : Least Concern.
Growth: S = slow M = medium F = fast. Soil: L = light (sandy) M = medium H = heavy (clay). pH: A = acid N = neutral B = basic (alkaline). Shade: F = full shade S = semi-shade N = no shade. Moisture: D = dry M = Moist We = wet Wa = water.
Expert comment
Author
L.
Botanical References
71235
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