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Dana, Michael
Silphium simpsonii Greene
Simpson's rosinweed, Tall Rosinweed
USDA Symbol: SISI
USDA Native Status: Native to U.S.
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: Perennial Habit: Herb Size Notes: 4-6
Flower:
Fruit: Size Class: 3-6 ft.
Bloom Information
Bloom Color: Yellow
Bloom Time: Jul , Aug , Sep , Oct
Distribution
USA: FL
USDA Native Status: L48(N) Growing Conditions
Water Use: Low
Light 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: yes
Attracts: Butterflies
Nectar Source: yes
Deer Resistant: Minimal
From the National Organizations Directory
According to the species list provided by Affiliate Organizations, this plant is either on display or available from the following:
Lady Bird Johnson Wildflower Center - Austin, TX
Recommended Species Lists
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Metadata
Record Modified: 2007-01-01
Research By: TWC Staff
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