Helianthus strumosus
Family
Asteraceae
Common Name(s)
Rough-leaved sunflower, woodland sunflower
Flowering Time
August
Fruit/Seed Maturation Sign
Heads yellowish orange; seeds are black
Fruit/Seed Collection Dates
Early September
Notes
Seed output modest; vegetative spread high from an elongate, sometimes branched rhizome (Fernald 1950, Barkely 1986, Gleason and Cronquist 1991, Runkel and Bull 2009).
Seed Cleaning
Separate seeds from papery seed head
Storage
Dry
Restoration Potential
Undetermined but probably high due to colony formation