Quick answer: 19 butterfly and moth host plants are native to Montana, 19 with a live listing as of 16 Sep 2026.
19 species
- Bearberry Arctostaphylos uva-ursi · 16 states
- Big bluestem Andropogon gerardii · 25 states
- Black-eyed Susan Rudbeckia hirta · 42 states
- Blue grama Bouteloua gracilis · 15 states
- Buffalograss Bouteloua dactyloides · 9 states
- Chokecherry Prunus virginiana · 35 states
- Fireweed Chamerion angustifolium · 28 states
- Green ash Fraxinus pennsylvanica · 23 states
- Indiangrass Sorghastrum nutans · 19 states
- Little bluestem Schizachyrium scoparium · 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
- Sideoats grama Bouteloua curtipendula · 25 states
- Smooth sumac Rhus glabra · 34 states
- Swamp milkweed Asclepias incarnata · 25 states
- Switchgrass Panicum virgatum · 24 states