Compass Plant (Silphium laciniatum) is a structural plant with yellow flowers that bloom mid-summer. They prefer mesic to dry soil in full sun where they can grow to a narrow and airy 12 feet tall. When planted in moist, fertile soil, they tend to flop, so they’re best suited for drier banks. Companion plants include Royal Catchfly (Silene regia) and Prairie Dropseed (Sporobolus heterolepis).
Plants may need staking once blooming begins.