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Milkweed

Asclepias syriaca, A. incarnata, A. tuberosa

Category: Flowers

Milkweed is an erect plant with showy, yellow-orange, pink-to purple, or green flower clusters. Perfect in pollinator or native gardens or in perennial beds, it is the larval host for monarch butterflies and provides nectar for monarchs and other pollinators. *Tropical milkweed (A. curassavica) is often sold in nurseries and is NOT recommended to attract monarch butterflies. Choose native milkweeds as listed above. Milkweed is mildly toxic and sap can cause contact dermatitus. Plant with caution around pets and horses.

How to Grow Milkweed

Quick Info

Spacing
1/Square
Depth
0.3 in
0.3 in
Sun
Full Sun
Water
1 in/week
Season
Perennial
Frost
Not tolerant
Height
3-5 ft
Germination
14-21 days
Germination Temp
50-75 °F
Sprout to Harvest
120-130 days
Soil pH
Slightly Acidic - Neutral

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Pests

Diseases

Beneficial Critters

Growing from Seed

Pot seeds in moist soils or between damp paper towels to cold stratify (refrigerate) for 3-12 weeks. Make sure to transplant seedlings before they become rootbound. Milkweed will self-seed in the garden. You can also take root cuttings to multiply plants.

Planting Considerations

Milkweed is drought tolerant and does well in poor, dry soil.

Harvesting

Harvest stems for bouquets when 1/3 to 1/2 of the flowers are open.

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