How to Grow Whorled Milkweed
Asclepias verticillata
Your complete guide to growing Whorled Milkweed.
When to Plant Whorled Milkweed
Planting windows vary by USDA hardiness zone. Look up yours by ZIP code.
Companion Plants for Whorled Milkweed
✓ Good companions
Attracts predatory insects that control milkweed pests, similar growing conditions
Another milkweed species that supports monarch reproduction and migration
Attracts beneficial predatory insects and provides late-season monarch nectar
Provides structural support and habitat diversity without competing for nutrients
Provides late-season nectar for monarchs during fall migration
Attracts beneficial insects and pollinators, extends bloom season for monarch butterflies
Attracts native bees and butterflies, complementary blooming periods
Fixes nitrogen in soil, benefits milkweed growth without direct competition
✗ Keep away from
Aggressive spreader that can outcompete and smother native milkweed plants
Dense root system competes heavily for water and nutrients
Releases allelopathic chemicals that inhibit milkweed germination and growth