Quick answer: 12 butterfly and moth host plants are native to Idaho, 12 with a live listing as of 16 Sep 2026.
12 species
- Bearberry Arctostaphylos uva-ursi · 16 states
- Black-eyed Susan Rudbeckia hirta · 42 states
- Chokecherry Prunus virginiana · 35 states
- Fireweed Chamerion angustifolium · 28 states
- Green ash Fraxinus pennsylvanica · 23 states
- Paper birch Betula papyrifera · 16 states
- Pearly everlasting Anaphalis margaritacea · 18 states
- Quaking aspen Populus tremuloides · 24 states
- Red-osier dogwood Cornus sericea · 22 states
- Rocky Mountain bee plant Peritoma serrulata · 22 states
- Smooth sumac Rhus glabra · 34 states
- Swamp milkweed Asclepias incarnata · 25 states