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Green Landscaping: Greenacres

Native Plants of the Great Lakes

North Branch Restoration Project Seed Book

Ascelpias Tuberosa / Family: Asclepiadaceae
Butterfly Weed, Swink/Wilhelm #7


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FLOWERING: Mid-June to September.

SEED TIMING: Late September to Mid-October.

HABITAT: Mostly dry to mesic prairies.

DIAGNOSTIC FEATURES: Herbaceous perennial. 1 to 2 feet tall, hairy. Leaves alternate and lanceolate or linear with slightly clasping bases. Flowers bright orange or yellow, in peduncles.

TO PICK: Seeds with downy parachutes form in erect pods, typically a few pods per plant. Look for ripened pods. Ripeness indicated when pod loses much of its original green color and/or begins to split open naturally. The seeds also indicate ripeness if they have become tan or brown.


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