Botanical Name: Silphium perfoliatum
Height: Very tall.
Season of bloom: Late summer.
Growing Conditions: Sun. Any well-drained soil.
Wildlife benefits: Leaf cups catch water for large insects and small birds. Flowers provide food for many pollinators. Nutritious seeds feed goldfinches and other birds
From Ottawa Valley or eastern Ontario sources: No.
Remarks: Excellent for a summer privacy hedge.
Similar species: Compass Plant, Tall Sunflower
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Beaux Arbres Plantes Indigènes / Native Plants 