Eupatoriadelphus maculatus (L.) R.M.King & H.Rob.
Eupatorium atromontanum Nelson
Eupatorium bruneri A.Gray
Eupatorium bruneri foliosum (Fernald) House
Eupatorium maculatum L.
Eupatorium purpureum bruneri (A.Gray) B.L.Rob.
Eupatorium purpureum foliosum Fernald
Eupatorium purpureum maculatum (L.) Á.Löve & D.Löve
Eupatorium rydbergi Britton
Eupatorium trifoliatum bruneri (A.Gray) Farw.
Eupatorium trifoliatum foliosum (Fernald) Farw.
Eupatorium trifoliatum maculatum (L.) Farw.
Common Name: Joe Pye Weed
Eupatorium maculatum is an erect, herbaceous perennial plant producing a clump of stems 60 - 200cm tall.
The plant is harvested from the wild for local use as a medicine and source of materials..
N. America - British Columbia, south through Washington to Utah and Arizona, east to Newfoundland and North Carolina
Damp thickets, meadows, shores etc, usually on rich or calcareous soils; at elevations up to 2,500 metres[
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Eupatorium maculatum is a very cold-hardy plant, able to tolerate temperatures down to around -25°c when fully dormant[
Succeeds in ordinary garden soil that is well-drained but moisture retentive in sun or part shade[
Plants seem to be immune to the predations of rabbits[
A tea made from the whole herb is diuretic[
]. It is used in the treatment of kidney complaints, painful urination, rheumatism etc[
The leaves and stems are harvested in the summer before the flower buds open, and are dried for later use[
A tea made from the roots is used in the treatment of fevers, colds, kidney and liver complaints, rheumatism etc[
]. It is said to have a tonic effect upon pregnant women[
] and is also said to induce sweating[
Externally, a decoction of the roots is used as a wash on rheumatic joints[
The roots are harvested in the autumn and dried for later use[
The stems have been used as straws[
]. The stems are usually solid, but are sometimes hollow near the base[
Seed - sow spring in a cold frame and only just cover the seed. Prick out the seedlings into individual pots when they are large enough to handle and plant them out into their permanent positions in the summer.
Division in spring or autumn[
]. Very easy, the clumps can be replanted direct into their permanent positions.