Apocynum medium
Plants
Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. 3 vols. Charles Scribner's Sons, New York. Vol. 3: 21. Courtesy of Kentucky Native Plant Society. Scanned by Omnitek Inc. · public_domain
About
Apocynum × floribundum, the intermediate dogbane, is a member of the family Apocynaceae. It is widespread across Canada, the United States, and northern Mexico.
Summary from Wikipedia
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Growing details and traits for Apocynum medium in the Library.
No cultivars in the Library yet — the full profile above covers the species itself.