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.
Fast growing shade tree in rich soil. Beautiful bark, flowers, and fall color. Attracts birds for the fruit and the many caterpillars that feed on the tree. Bitter fruit not edible for humans unless cooked.