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Question and Answer

How can I grow milkweed from seed?

Milkweed seed can be planted directly in soil, or started indoors. You can sow milkweed seeds by scattering them on the soil surface 1/4-1/2 inch apart, and then cover them with about 1/4 inch of additional soil. Water the area frequently after planting until plants become established. Many species need to be vernalized (cold treated) before planting. Vernalized seeds can be planted in the spring after the danger of frost has passed. Non-vernalized seeds can be planted in the fall, and nature will provide the cold treatment. See Monarch Watch's milkweed propagation guide for further recommendations, information on vernalization and instructions for starting milkweed seeds indoors.  Also watch our Monarch Conservation Webinar: Growing Milkweed for Monarch Conservation (scroll down to May 2016) to hear from Chip Taylor of Monarch Watch on milkweed growing techniques and best practices. For further details on milkweed growing and conservation use, visit the Xerces Society's Milkweed Practicitoner Guide, which is a complete guide to milkweeds, including biology/ecology, propagation, benefits to wildlife, and use in restoration projects.

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