Bidens
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Describe the plant here...
Standard Cyclopedia of Horticulture |
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Bidens (Latin, two-teeth, in reference to the awns). Compositae. Bur-marigold. Stick-tights. Tick-seed. Annual, or rarely perennial, herbs, mostly American, related to Coreopsis, Dahlia, and Cosmos. Leaves opposite, serrate or incised, often pinnately or ternately divided: heads radiate or discoid; rays yellow or white; disk yellow; involucre double, the outer set of bracts green and more or less foliaceous, the inner of quite different texture and shape, more appressed, thinner, more scarious and striate: achenes flat or angled; pappus of 2-4 stiff bristles or awns, usually retrosely barbed.—Plants grown as garden annuals. B. frondosa, a common weed, is the well-known bootjack bur, or stick-tight. B. dahlioides, Wats. A perennial with dahlia-like tubers. Mex.
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Cultivation
Propagation
Pests and diseases
Varieties
Gallery
References
- Standard Cyclopedia of Horticulture, by L. H. Bailey, MacMillan Co., 1963