common bur marigold, graban deiran, three-leaved bur marigold, water agrimony, water hemp
Size
Time to Maturity
No preference
Botanical Details
Family
Asteraceae
Native to GB/Ireland
Yes
Genus
Bidens can be annuals, perennials or deciduous shrubs, with opposite, simple or pinnately-divided leaves and daisy-like or disc-like flowerheads in summer