Helianthus tuberosus: 8’ high x indefinitely spreading / full sun to part shade / zone 2
Another well-known Eastern North-American wild edible, this relative of the sunflower is cultivated for its roots, and can be used as a staple crop. It is very productive, and will happily take over a garden, so be careful where you plant it. The roots store carbohydrates in the form of inulin, which is difficult to digest, and so can cause flatulence; cooking for prolonged periods will lessen this effect. They can be steamed, boiled or roasted. They also attract bees (the flowers, not the tubers).