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Silphium gracile
Silphium gracile A. Gray
Slender Rosinweed
Asteraceae (Aster Family)
Synonym(s): Silphium simpsonii var. wrightii
USDA Symbol: SIGR4
USDA Native Status: L48 (N)
Plant Characteristics
Duration: PerennialHabit: Herb
Leaf Retention: Deciduous
Size Notes: Up to about 3 feet tall.
Flower: Flowers 2 inches long.
Fruit: Fruit is a cypsela (pl. cypselae). Though technically incorrect, the fruit is often referred to as an achene.
Bloom Information
Bloom Color: YellowBloom Time: Jun , Jul , Aug
Distribution
USA: FL , LA , MS , TXNative Habitat: Roadsides, Prairie, Plains, Meadows, Pastures, Savannas
Growing Conditions
Water Use: LowLight Requirement: Sun , Part Shade
Soil Moisture: Dry , Moist
Soil Description: Sandy, Sandy Loam, Medium Loam, Acid-based
Benefit
Use Ornamental: Perennial garden, Rocky hillsideConspicuous Flowers: yes
Attracts: Butterflies
Nectar Source: yes
Value to Beneficial Insects
Special Value to Native BeesThis information was provided by the Pollinator Program at The Xerces Society for Invertebrate Conservation.
Propagation
Propagation Material: SeedsSeed Collection: Grows well from seed. Collect seed in fall.
Maintenance: Gets rust no matter what.
Find Seed or Plants
Order seed of this species from Native American Seed and help support the Wildflower Center.
From the National Organizations Directory
According to the species list provided by Affiliate Organizations, this plant is on display at the following locations:Lady Bird Johnson Wildflower Center - Austin, TX
Bibliography
Bibref 318 - Native Texas Plants: Landscaping Region by Region (2002) Wasowski, S. & A. WasowskiSearch More Titles in Bibliography
Web Reference
Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter
Additional resources
USDA: Find Silphium gracile in USDA PlantsFNA: Find Silphium gracile in the Flora of North America (if available)
Google: Search Google for Silphium gracile
Metadata
Record Modified: 2023-01-16Research By: TWC Staff