Pick a sunny, well-drained location. Whorled Milkweed loves full sun but will tolerate moderate shade.
This milkweed grows in sandy or rocky soils. It thrives in poor soil but is versatile.
6-8 weeks before last frost, start seeds indoors. Plant seeds after 24 hours of soaking. Seed in seed-starting mix and lightly cover with soil.
Water plants regularly without flooding. Once established, Whorled Milkweed is drought-tolerant, so do not overwater.
Whorled Milkweed is low-maintenance once planted. Remove weeds around plants and mulch to keep soil moisture and control weeds.
Late fall stem pruning is possible in cooler areas. Leave plants as is in warmer places for winter interest and protection.
Whorled Milkweed hosts Monarch caterpillars. Your planting provides a key resource throughout their lifecycle.
Watch for aphids. They can be removed with water or insecticidal soap.