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Family: apocynaceae
Common name(s): Four-leaved Milkweed
Hardiness ratings: USDA zone 5~5b - 8 
General resources
Links for Asclepias quadrifolia
- Carolina Nature - Photos of this native plant, often with notes on habitat and identification.
 (1 photo)
- Dave's Garden PlantFiles - Profile page with horticultural basics, and member-contributed photos and comments. (zone 5b) (5 photos)
- Garden.org - Community-assembled plant profile (6 photos)
- Kansas Wildflowers & Grasses - Plant portrait with botanical details and description (7 photos)
- Lady Bird Johnson Wildflower Center - Plant description and characteristics with notes on distribution, culture, and propagation. (13 photos)
- Missouri Botanical Garden - Plantfinder page for one of the plants growing at the garden, with usually one or more photos, horticultural information, and noteworthy characteristics. (zone 5-8) (1 photo)
- Missouri Plants - Description and photographs of botanical features, with notes about habitat and native status. (8 photos)
- North Carolina State University factsheet - Plant profile with horticultural details and comments (zone 5-8) (8 photos)
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