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Common Name: Rattlesnake Root
Prenanthes altissima is a perennial plant that can grow up to 1.80 metres tall.
It has medicinal uses.
Eastern N. America - Nova Scotia to Georgia, west to Ontaria and Texas
Open deciduous hardwood or mixed woods, shaded slopes, bluffs, disturbed areas and roadsides at elevations of 50 - 800 metres[
Requires a moist but well-drained humus-rich neutral to acid soil in shade or semi-shade[
Suitable for naturalizing in the wild garden[
The plant is used as a poultice[
]. A poultice of the crushed roots has been used to treat rattlesnake bites[
Seed - sow early spring in a cold frame and only just cover the seed. When they are large enough to handle, prick the seedlings out into individual pots and plant them out into their permanent positions in the summer if they have grown enough. If not, grow them on in a cold frame for their first winter and plant them out the following spring after the last expected frosts.
Division in spring.