Ohio Native Plant Natural Range
To view the natural range of Silphium laciniatum visit the USDA Natural Resources Conservation Service website.
Endangered - On the Ohio Department of Natural Resources Rare Plant List
.jpg "Compass Plant")
.jpg "Silphium laciniatum")
Propagation Notes Compass Plant
Stratifying Seeds
1. Zip lock plastic bag2. Few tablespoons of Vermiculite3. Dampen vermiculite - not soggy4. Store seed in refrigerator for 60 days Seeds require cold, moist storage in order to germinate
Alternative Method - Fall sow in an outdoor cold frame. It is best to cover them well with potting soil, making it more difficult to small mammals like mice to discover them Slow to mature - Silphium laciniatum was started from seed in February 2016, we didn't expect flowers the first season but were surprised when not one of our Compass Plants bloomed in 2017.
Hopefully, they will get down to business in 2018 - They Did!
Alternative Method - Fall sow in an outdoor cold frame. It is best to cover them well with potting soil, making it more difficult to small mammals like mice to discover them Slow to mature - Silphium laciniatum was started from seed in February 2016, we didn't expect flowers the first season but were surprised when not one of our Compass Plants bloomed in 2017.
Hopefully, they will get down to business in 2018 - They Did!
