*Due to CA agricultural regulations, we’re required to treat Asclepias plants with BT (a non-toxic, naturally occurring biological larvicide) to help combat the Light Brown Apple Moth (LBAM). Effects last only 1 week after application.
If you are planning to introduce Monarch caterpillars to this plant, we recommend letting it establish for one season before doing so to ensure it is large enough to provide sufficient food.
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Avg/No Summer Water
CA Native Perennial
USDA Zones 6-10