Compass Plant (Silphium laciniatum)
A very tall plant that towers prominently over the mesic prairie. The flowers change direction throughout the day following the sun, giving it its name. The taproot can reach a depth of 15 feet or more.
 
Acronym: SILLAC
Life-Cycle: Perennial
Bloom Color: Yellow
Bloom Time: July - September
Typical Height: 96"
Light Preference: Full Sun
Soil Preference: Mesic
Root Structure: Taproot
Stratification: Cold & Moist for 60 Days
Seeds per Ounce: 660*
IL County Ecotypes we Grow**
DeKalb County
LaSalle 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.