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Bruso, George H.
Silphium integrifolium Michx.
Wholeleaf rosinweed, Entire-leaf rosinweed
USDA Symbol: SIIN2
USDA Native Status: L48 (N), CAN (I?)
A coarse perennial, 2-6 ft. tall with large, yellow composite flowers and rough, paired, oval to lance-shaped leaves.
Plant CharacteristicsDuration: Perennial Habit: Herb Flower:
Fruit: Size Class:
Bloom InformationBloom Color: Yellow
Bloom Time: Jul , Aug , Sep
, WY Canada: ON Native Distribution: IN
w. to e. Great Plains Native Habitat:
Growing ConditionsLight Requirement: Sun
Soil Description: Well-drained soils.
Conditions Comments: Not Available
PropagationDescription: Sow unstratified seed in fall or stratified seed in spring.
Seed Collection: Collect in Sep. and Oct.
Seed Treatment: Cold-moist stratification for 2 months.
Commercially Avail: yes
National Wetland Indicator Status
|Status:|| FAC |
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:
Nueces River Authority
- Uvalde, TXMt. Cuba Center
- Hockessin, DE
Record Last Modified: 2012-12-09
Research By: TWC Staff