Milkweed, Swamp Seed Packets

Grow Perennial Swamp Milkweed to help save the endangered Monarch Butterfly.
Monarch numbers and milkweed plants are down 90% from what they once were. Milkweed plants are the only source of food for the monarch caterpillar. Make a difference by planting milkweed!

Also called Rose Milkweed, this variety features beautiful pink flowers that attract a wide range of pollinators. Plants grow 36–60" tall.

Direct sow in late fall or spring. Cold stratify seeds for 30 days prior to spring planting. Start indoors 7–9 weeks before the last frost. Transplant into 4" pots after 3–5 weeks, then harden off and transplant to well-drained soil.

In the United States, Swamp Milkweed (Asclepias incarnata) is native to the following states: AL, AR, CO, CT, DE, FL, GA, ID, IL, IN, IA, KS, KY, LA, ME, MD, MA, MI, MN, MO, MT, NE, NV, NH, NJ, NM, NY, NC, ND, OH, OK, PA, RI, SC, SD, TN, TX, UT, VT, VA, WV, WI, WY.

Growing Instructions

• Direct sow in fall or spring

• Cold stratify seeds for 30 days before spring sowing

• Sow 1/4 inch deep

• Start indoors 7–9 weeks before last frost

• Transplant into 4" pots after 3–5 weeks

• Harden off and transplant to well-drained soil

Seed Information

• Lifecycle: perennial

• Sun Requirement: full sun, partial shade

• Spacing: 18"–36" apart

• Depth: 1/4 inch

• Bloom Season: summer

• Height: 36"–60"

• Seeds Per Packet: 100–110

• Seeds Per Ounce: 6,375

• Sowing Method: direct sow

• Low Maintenance: yes

Uses

• Bee attractant

• Butterfly attractant

• Hummingbird

• Pollinator

• Cut flower

Additional Information

• Scientific Name: Asclepias incarnata

• Packet Size: 3 ¼" x 4 ½"

Asclepias plants and sap may cause skin irritation in humans and animals. Do not ingest seed or plants.

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• Direct sow in fall or spring
• Cold stratify seeds for 30 days before spring sowing
• Sow 1/4 inch deep
• Start indoors 7–9 weeks before last frost
• Transplant into 4" pots after 3–5 weeks
• Harden off and transplant to well-drained soil

• Lifecycle: perennial
• Sun Requirement: full sun, partial shade
• Spacing: 18"–36" apart
• Depth: 1/4 inch
• Bloom Season: summer
• Height: 36"–60"
• Seeds Per Packet: 100–110
• Seeds Per Ounce: 6,375
• Sowing Method: direct sow
• Low Maintenance: yes

• Bee attractant
• Butterfly attractant
• Hummingbird
• Pollinator
• Cut flower

• Scientific Name: Asclepias incarnata
• Packet Size: 3 ¼" x 4 ½"