Genus: Hemp agrimony

Eupatorium

Photo/Illustration: 
Michelle Gervais
Hemp agrimony (Eupatorium)
yew-pah-TOR-ee-um
Asteraceae
Plants in the genus Eupatorium bear tubular and fringe-like flowerheads of white, pink, or purple that add soft color and texture to the summer and fall garden. These plants from diverse habitats are grown for their ease of care and their usefulness in mixed borders, wild gardens, and other naturalized areas.
Noteworthy characteristics:  Some species are tender, evergreen shrubs, which flower in early to late spring and require little pruning.
Care:  Grow in moist soil in full sun or partial shade.
Propagation: 

Sow seed in a cold frame in spring; divide hardy species in spring; take softwood cuttings of tender species in spring.

Problems: 

Rust, powdery mildew, white smut, Cercospora and Septoria leaf spot, Southern blight, snail, slugs. Indoors, watch for spider mites and whiteflies.

Species, varieties and clutivars for genus Eupatorium

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'Phantom' Joe Pye weed
Eupatorium 'Phantom'
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Joe Pye weed
Eupatorium dubium 'Little Joe'
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Joe Pye weed
Eupatorium maculatum
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'Gateway' Joe Pye weed
Eupatorium maculatum 'Gateway'
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Joe Pye weed
Eupatorium purpureum
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White snakeroot
Eupatorium rugosum
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White snakeroot
Eupatorium rugosum 'Chocolate'