60 wildflowers were recorded blooming in Montana in June in our iNaturalist sample; 36 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.
Top wildflowers in June

Arrowleaf Balsamroot

Small Camas

Bride's Bonnet

Glacier Lily

Bitterroot

Common Beargrass

Orange Honeysuckle

Sego Lily
Bearberry

Virginia strawberry

Large-Flowered Triteleia
Spotted Fritillary
All wildflowers blooming in Montana in June
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | Arrowleaf Balsamroot | Balsamorhiza sagittata | Sunflowers, Daisies, Asters, and Allies | 176 | Jun (peak) |
| 2 | Small Camas | Camassia quamash | agave and allies | 141 | Jun (peak) |
| 3 | Bride's Bonnet | Clintonia uniflora | lily family | 110 | Jun (peak) |
| 4 | Glacier Lily | Erythronium grandiflorum | lily family | 107 | Jun (peak) |
| 5 | Bitterroot | Lewisia rediviva | Pussypaw Family | 99 | Jun (peak) |
| 6 | Common Beargrass | Xerophyllum tenax | Herb-Paris, False Hellebores, Trilliums and allies | 95 | Jun (peak) |
| 7 | Orange Honeysuckle | Lonicera ciliosa | honeysuckle family | 73 | Jun (peak) |
| 8 | Sego Lily | Calochortus nuttallii | lily family | 72 | Jun (peak) |
| 9 | Bearberry | Arctostaphylos uva-ursi | heath family | 64 | May (past peak) |
| 10 | Virginia strawberry | Fragaria virginiana | rose family | 64 | Jun (peak) |
| 11 | Large-Flowered Triteleia | Triteleia grandiflora | agave and allies | 62 | May (past peak) |
| 12 | Spotted Fritillary | Fritillaria atropurpurea | lily family | 60 | Jun (peak) |
| 13 | Yellow Salsify | Tragopogon dubius | Sunflowers, Daisies, Asters, and Allies | 48 | Jun (peak) |
| 14 | Red-Berried Elder | Sambucus racemosa | elder family | 47 | Jun (peak) |
| 15 | Prairie Pasqueflower | Pulsatilla nuttalliana | buttercup family | 38 | Apr (past peak) |
| 16 | Thimbleberry | Rubus parviflorus | rose family | 37 | Jun (peak) |
| 17 | Pacific trillium | Trillium ovatum | Herb-Paris, False Hellebores, Trilliums and allies | 35 | May (past peak) |
| 18 | Threeleaf Foamflower | Tiarella trifoliata | saxifrage family | 34 | Jul (rising) |
| 19 | Edible Valerian | Valeriana edulis | honeysuckle family | 33 | Jun (peak) |
| 20 | Field Bindweed | Convolvulus arvensis | bindweed family | 29 | Jun (peak) |
| 21 | Red Osier Dogwood | Cornus sericea | Dogwood family | 29 | Jun (peak) |
| 22 | Showy Milkweed | Asclepias speciosa | Dogbane Family | 29 | Jul (rising) |
| 23 | Canadian bunchberry | Cornus canadensis | Dogwood family | 28 | Jun (peak) |
| 24 | Star-Flowered Lily-Of-The-Valley | Maianthemum stellatum | agave and allies | 28 | Jun (peak) |
| 25 | Solomon's plume | Maianthemum racemosum | agave and allies | 25 | Jun (peak) |
| 26 | Spreading Dogbane | Apocynum androsaemifolium | Dogbane Family | 24 | Jun (peak) |
| 27 | Twinberry Honeysuckle | Lonicera involucrata | honeysuckle family | 24 | Jun (peak) |
| 28 | Common Yarrow | Achillea millefolium | Sunflowers, Daisies, Asters, and Allies | 22 | Jul (rising) |
| 29 | Prairie Smoke | Geum triflorum | rose family | 22 | May (past peak) |
| 30 | Northern Bedstraw | Galium boreale | madder family | 21 | Jul (rising) |
| 31 | Fireweed | Chamaenerion angustifolium | evening primrose family | 21 | Jul (rising) |
| 32 | Saskatoon | Amelanchier alnifolia | rose family | 20 | May (past peak) |
| 33 | Twinflower | Linnaea borealis | honeysuckle family | 20 | Jul (rising) |
| 34 | Spotted Coralroot | Corallorhiza maculata | Orchids | 19 | Jun (peak) |
| 35 | Red Baneberry | Actaea rubra | buttercup family | 19 | Jun (peak) |
| 36 | Scarlet Globemallow | Sphaeralcea coccinea | Mallow and Hibiscus Family | 19 | Jun (peak) |
| 37 | Dame's Rocket | Hesperis matronalis | mustard family | 18 | Jun (peak) |
| 38 | Red Clover | Trifolium pratense | Legumes | 17 | Jun (peak) |
| 39 | Monument Plant | Frasera speciosa | gentian family | 17 | Jun (peak) |
| 40 | White Campion | Silene latifolia | pink family | 17 | Jun (peak) |
| 41 | Musk Thistle | Carduus nutans | Sunflowers, Daisies, Asters, and Allies | 16 | Jun (peak) |
| 42 | Corn Gromwell | Buglossoides arvensis | borage family | 16 | Jun (peak) |
| 43 | Orange Hawkweed | Pilosella aurantiaca | Sunflowers, Daisies, Asters, and Allies | 16 | Jun (peak) |
| 44 | Yellow Lady's Slipper | Cypripedium parviflorum | Orchids | 15 | Jun (peak) |
| 45 | Black Medick | Medicago lupulina | Legumes | 15 | Jun (peak) |
| 46 | Shrubby Cinquefoil | Dasiphora fruticosa | rose family | 15 | Jun (peak) |
| 47 | Creeping Mahonia | Berberis repens | barberry family | 15 | May (past peak) |
| 48 | Poison Hemlock | Conium maculatum | carrot family | 14 | Jul (rising) |
| 49 | Yellow Sweetclover | Melilotus officinalis | Legumes | 14 | Jun (peak) |
| 50 | Common Cowparsnip | Heracleum maximum | carrot family | 13 | Jun (peak) |