Can be aggressive, may need to weed, but seeds are great for birds. Better in larger gardens. A study in KC showed that Helianthus is one of the plant genera in our area that attracts the largest number of different bee species.
Great source of late-season nectar for the bees and butterflies. May get tall and floppy in rich soil so plant with other tall flowers or grasses or trim back through early summer to get a shorter plant. Remove spent flowers in late summer to encourage fa