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Plant · P-1059
Green Antelopehorn
Asclepias viridis
A low, clump-forming perennial wildflower with thick, outward-leaning stems that reach about one and a half to two and a half feet tall and roughly as wide. Clusters of pale green flowers with purple centers open from spring into summer at the stem tips and are an important nectar source for native bees and a host plant for monarch butterfly caterpillars. It grows from a taproot, prefers full sun, and tolerates poor, rocky and even limestone-derived soils.
Record at a glance
Growing profile
- Sun
- Full Sun
- USDA zone
- USDA 4–9
- Soil
- Sand · Loam
- Moisture
- Dry · Moist · Well-Drained
Vertical layer
Herbaceous- Soil pH
- 6–8
- Plant type
- Perennial
- Mature height
- 18–30 in
- Mature spread
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The deeper layer