Rosin Weed (Silphium integrifolium)
A very tall plant that towers prominently over the wet prairie. Spreading by seed and roots, this species can create small colonies in the right conditions.
 
Acronym: SILINT
Life-Cycle: Perennial
Bloom Color: Yellow
Bloom Time: July - September
Typical Height: 60"
Light Preference: Full Sun
Soil Preference: Dry
Root Structure: Taproot and Short Rhizome
Stratification: Cold & Moist for 60 Days
Seeds per Ounce: 1,200*
IL County Ecotypes we Grow**
McHenry County
 
Other scientific names used for this species:
None
 
Other common names used for this species:
None
 
*Approximate, actual number of seeds may vary slightly by seed lot.
**We have listed the County ecotypes that we grow for this species, this ecotype may or may not be available at the time of your order. If you prefer one of the ecotypes over another please type it into the "Additional Info Section" and we'll provide that ecotype if it's available, if it is not available we will provide one of the other ecotypes listed.