Butterfly Milkweed (Asclepias tuberosa) is a stunning perennial that blazes with deep red-crimson flower clusters from early to midsummer, attracting an impressive variety of butterflies and pollinators to your garden. Hardy in zones 4 through 8, this long-lived native thrives in full sun with minimal water once established, reaching flowering in 60 to 75 days from seed. The nectar it produces is perfectly formulated for butterfly diets, making it far more than just a pretty face in the garden; it's genuinely nourishing the insects that depend on it.
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4-8
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The deep crimson clusters of this milkweed are designed by nature to draw butterflies like a magnet, and the nectar these flowers produce is specifically tailored to sustaining them through their lives. Unlike some milkweed varieties that pollinators overlook, this one commands attention from beneficial insects of all kinds. It thrives on neglect once established, asking only for full sun and well-draining soil, making it refreshingly low-maintenance for a flower that delivers such visual impact.
Butterfly Milkweed serves as a critical nectar source and host plant for monarch butterflies and other pollinators. Gardeners cultivate it specifically to support butterfly populations and create living corridors for migrating monarchs. The flowers also attract a diverse array of beneficial insects, making it an essential component of pollinator gardens and native plant landscapes.
No timeline data available yet for this variety.
Sow seeds indoors 6 to 8 weeks before your last spring frost in a seed-starting mix. Keep soil temperature between 60 and 75 degrees Fahrenheit for reliable germination. Seeds typically germinate within 10 to 14 days under these conditions.
Harden off seedlings by gradually exposing them to outdoor conditions over 7 to 10 days once soil temperatures consistently reach 55 to 60 degrees Fahrenheit. Transplant after all danger of frost has passed in your area. Space plants 12 to 18 inches apart in full sun.
Direct sow seeds in spring after the last frost date, pressing them lightly into well-prepared soil. Keep the soil consistently moist until seedlings are established. Thinning may be necessary if seedlings emerge too densely.
Pinch back young plants when they reach 6 inches tall to encourage bushier growth and more flower clusters. Deadhead faded flowers regularly throughout the season to stimulate continued blooming. Allow some flowers to remain at season's end if you wish to collect seed for future plantings or to provide food for overwintering insects.
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