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Compass Plant

Silphium laciniatum

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Category
Forb / Wildflower
Sun
Full to Partial
Soil moisture
Medium-Wet to Dry
Bloom time
Jun–Sep
Bloom color
Yellow

About Compass Plant

Compass Plant is a true icon of the tallgrass prairie, famous for its unique ability to orient its massive, deeply lobed leaves in a north-south direction to maximize sun exposure. This architectural giant can reach heights of six to ten feet, topped with large, bright yellow flowers that resemble wild sunflowers. Beyond its fascinating foliage, the plant is a marvel of endurance, developing a massive taproot that can extend fifteen feet deep into the earth. This deep root system allows it to thrive in the face of severe drought and survive for decades in the same spot. Native to the central United States, it provides essential habitat and food for diverse wildlife, from specialized native bees to birds that relish its oil-rich seeds. Compass Plant prefers full sun and medium-wet to dry soils, and while it may take a few years to reach its full flowering potential, the wait is well worth it for such a legendary and long-lived addition to any prairie restoration or large-scale garden.

Native range

Native to 26 states:

AlabamaArkansasColoradoD.C.IowaIllinoisIndianaKansasKentuckyLouisianaMichiganMinnesotaMissouriMississippiNorth DakotaNebraskaNew MexicoNew YorkOhioOklahomaPennsylvaniaSouth DakotaTennesseeTexasVirginiaWisconsin

County range map

BONAP county-level native range map for Silphium laciniatum

Range map courtesy of BONAP (Biota of North America Program).

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