Hemp dogbane

Apocynum cannabinum

Apocynum cannabinum grows up to 2 meters/6 feet tall. The stems are reddish and contain a milky latex capable of causing skin blisters. The leaves are opposite, simple broad lanceolate, 7–15 cm long and 3–5 cm broad, entire, and smooth on top with white hairs on the underside. It flowers from July to August, has large sepals, and a five-lobed white corolla. The flowers are hermaphrodite (have both male and female organs) and are pollinated by moths and butterflies.

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