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Dana, Michael
Silphium simpsonii
Silphium simpsonii Greene
Simpson's rosinweed, Tall Rosinweed
Asteraceae (Aster Family)
Synonym(s):
USDA Symbol: SISI
USDA Native Status: L48 (N)
A big perennial (4 to 5 feet or more) with 2-inch yellow flower heads that bloom from mid-summer to fall when hardy bloomers are appreciated. Use as a background accent.
Plant Characteristics
Duration: PerennialHabit: Herb
Size Notes: 4-6
Flower:
Fruit:
Size Class: 3-6 ft.
Bloom Information
Bloom Color: YellowBloom Time: Jul , Aug , Sep , Oct
Growing Conditions
Water Use: LowLight Requirement: Sun , Part Shade
Soil Moisture: Dry , Moist
Conditions Comments: A denizen of the prairie or bright woodland edge, Simpsons rosinweed is a good nectar source for butterflies. Appreciates good drainage but is tolerant of a variety of soils from sand to clay.
Benefit
Conspicuous Flowers: yesAttracts: Butterflies
Nectar Source: yes
Deer Resistant: Minimal
Value to Beneficial Insects
Special Value to Native BeesThis information was provided by the Pollinator Program at The Xerces Society for Invertebrate Conservation.
From the National Suppliers Directory
According to the inventory provided by Associate Suppliers, this plant is available at the following locations:Wrights Nursery - Briggs, TX
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
NPSOT - Williamson County Chapter - Georgetown, TX
Mt. Cuba Center - Hockessin, DE
Additional resources
USDA: Find Silphium simpsonii in USDA PlantsFNA: Find Silphium simpsonii in the Flora of North America (if available)
Google: Search Google for Silphium simpsonii
Metadata
Record Modified: 2007-01-01Research By: TWC Staff