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Milkweeds (Butterfly Bush) seeding today - Save them and the Monarchs!

I encourage all of you to go outside today and collect milkweed seeds, to help the declining monarch butterflies. (At least in So Cal!)

I discovered that several of our milkweeds are sending out seeds from their pods today. I gathered the fluffy little parachuted seeds from around the plants, and pulled the rest from the cracked seed pods. As many of you probably know, Monarch butterflies are in decline, and the milkweed is one of their favorite attractors.

A guide to common milkweeds in California

California Pollinator Plants: Common Milkweed

A have a question for those of you who have propagated milkweed from seed in zone 10+. I know that they require refrigeration for 30 days in order to increase germination from 10% to 90%. I have also read that in climates zone 9 and under, that this is done before spring so they can be started inside and planted out when it's warm enough. However, its warm enough here for milkweed to be perennial (in zone 10 or above), so ... here is my question. Can I begin cold-stratification now (June) and germinate them in July?

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