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Bransford, W.D. and Dolphia
Silphium perfoliatum L.
USDA Symbol: SIPE2
USDA Native Status: L48 (N), CAN (N)
A coarse perennial, 3-6 ft. tall with numerous large, yellow composite flowers. Each flower head has 20-30 yellow rays and darker yellow disks. Stout leaves are joined at stem to form a small cup that holds water and attracts birds.
The small cup formed by the leaves holds water and attracts birds.
Plant CharacteristicsDuration: Perennial Habit: Herb Size Notes:
Can grow to as much as 9 ft. Fruit: Size Class:
Bloom InformationBloom Color: Yellow
Bloom Time: Jul , Aug , Sep
, WV Canada: ON Native Distribution:
S. Ont. to NC,
w. to e. Great Plains Native Habitat:
Moist woods; prairies; low ground
Growing ConditionsLight Requirement: Sun
Soil Moisture: Dry , Moist , Wet
Drought Tolerance: High
Soil Description: Wet to mesic soils. Will tolerate clay soil.
Conditions Comments: Unstoppable urge to reproduce, they will pop up everywhere; very little care needed.
BenefitUse Wildlife: Attracts birds for seed.
Conspicuous Flowers: yes
Attracts: Butterflies , Hummingbirds
Nectar Source: yes
PropagationDescription: Most easily propagated by seed. Sow unstratified seed in spring or stratified in fall. Deep roots make it difficult to transplant but young offshoots from parent plant can be removed and planted.
Seed Collection: Seeds can be allowed to dry out before sowing. Collect in Sep. and Oct.
Seed Treatment: This species requires or benefits from a three month period of cold moist stratification in the refrigerator.
Commercially Avail: yes
National Wetland Indicator Status
This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1
(Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here
for map of regions.
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:
Texas Discovery Gardens
- Dallas, TXNative Seed Network
- Corvallis, OR
Record Last Modified: 2012-12-09
Research By: TWC Staff