For the Rocky Mountain Region of the U.S., these are some of the plants that are recommended for a butterfly garden.

- Aspen, cottonwood, willow for Weidemeyer’s Admiral
- Paintbrush, beardstongues for Edith’s Checkerspot
- Fennel, parsley, dill for Anise Swallowtail and Indra Swallowtail
- Cottonwood, black cherry, ash for Western Tiger Swallowtail
- Cherry and ash for Pale Swallowtail
- Milkweed for Monarch
- Currents and gooseberries for Hoary Comma
- Willow, hackberry, elm for Mourning Cloak
- Asters for Pearl Crescent
- Willow, hackberry for Mourning Cloak
- Prairie clovers, indigo (Dalea), alfalfa, and clover (Trifolium) for Southern Dogface
- Alfalfa and clover for Clouded Sulphur
- Violets for Callippe Fritillary
- Dock for Ruddy Copper and Purplish Copper
- Pussy toes for West Coast Lady, American Lady, and Painted Lady