Missouri
- Heirloom Vegetables for the St. Louis Area - Recommended Varieties. Missouri Botanical Garden.
- St. Louis Monarch Plant Mix, Milkweeds for Monarchs: The St. Louis Butterfly Project
- Butterfly milkweed (Asclepias tuberosa) - MWN - AM - HNO
- Common milkweed (Asclepias syriaca) - MWN
- Swamp/marsh milkweed (Asclepias incarnata) - MWN
- Whorled milkweed (Asclepias verticillata) - MWN - AM
- Bee balm/bergamot (Monarda bradburiana) - MWN
- Black-eyed Susan (Rudbeckia fulgida) - MWN
- Goldenrod (Solidago drummondii) - MWN
- New England Aster (Symphyotrichum novae-angliae) - MWN
- Purple coneflower (Echinacea purpurea) - MWN
- Natives for Monarchs, Grow Native
- Purple milkweed (Asclepias purpurascens) - MWN
- Sullivant's milkweed (Asclepias sullivantii) - MWN
- Green milkweed (Asclepias viridiflora) - MWN
- Spider milkweed (Asclepias viridis) - MWN
Seed providers
- Victory Gardeners, Columbia, Missouri
- Baker Creek Heirloom Seeds, Mansfield, Missouri
- Seed Savers Exchange, Decorah, Iowa
- SeedGeeks, St. Louis, Missouri
- Kitazawa Seed Company, Oakland, California