39 wildflowers were recorded blooming in Montana in October in our iNaturalist sample; 3 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.
Top wildflowers in October
Spotted Knapweed
Pearly Everlasting
Red Clover
White Campion
Great Mullein
Curlycup Gumweed
Common Toadflax
Common Yarrow
Common Tansy
White Sweetclover
Rocky Mountain Beeplant
Woodland Strawberry
All wildflowers blooming in Montana in October
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | Spotted Knapweed | Centaurea stoebe | Sunflowers, Daisies, Asters, and Allies | 12 | Jul (past peak) |
| 2 | Pearly Everlasting | Anaphalis margaritacea | Sunflowers, Daisies, Asters, and Allies | 6 | Jul (past peak) |
| 3 | Red Clover | Trifolium pratense | Legumes | 5 | Jun (past peak) |
| 4 | White Campion | Silene latifolia | pink family | 5 | Jun (past peak) |
| 5 | Great Mullein | Verbascum thapsus | figwort family | 4 | Jul (past peak) |
| 6 | Curlycup Gumweed | Grindelia squarrosa | Sunflowers, Daisies, Asters, and Allies | 4 | Aug (past peak) |
| 7 | Common Toadflax | Linaria vulgaris | Plantain Family | 3 | Jul (past peak) |
| 8 | Common Yarrow | Achillea millefolium | Sunflowers, Daisies, Asters, and Allies | 3 | Jul (past peak) |
| 9 | Common Tansy | Tanacetum vulgare | Sunflowers, Daisies, Asters, and Allies | 3 | Aug (past peak) |
| 10 | White Sweetclover | Melilotus albus | Legumes | 3 | Jul (past peak) |
| 11 | Rocky Mountain Beeplant | Cleomella serrulata | Spider Flower Family | 3 | Aug (past peak) |
| 12 | Woodland Strawberry | Fragaria vesca | rose family | 2 | May (past peak) |
| 13 | Yellow Salsify | Tragopogon dubius | Sunflowers, Daisies, Asters, and Allies | 2 | Jun (past peak) |
| 14 | Alfalfa | Medicago sativa | Legumes | 2 | Sep (past peak) |
| 15 | Yellow Sweetclover | Melilotus officinalis | Legumes | 2 | Jun (past peak) |
| 16 | Rubber Rabbitbrush | Ericameria nauseosa | Sunflowers, Daisies, Asters, and Allies | 2 | Sep (past peak) |
| 17 | Creeping Thistle | Cirsium arvense | Sunflowers, Daisies, Asters, and Allies | 2 | Aug (past peak) |
| 18 | Hoary Alyssum | Berteroa incana | mustard family | 2 | Jul (past peak) |
| 19 | Musk Thistle | Carduus nutans | Sunflowers, Daisies, Asters, and Allies | 2 | Jun (past peak) |
| 20 | Shrubby Cinquefoil | Dasiphora fruticosa | rose family | 2 | Jun (past peak) |
| 21 | Prairie Pasqueflower | Pulsatilla nuttalliana | buttercup family | 2 | Apr (past peak) |
| 22 | Common Dandelion | Taraxacum officinale | Sunflowers, Daisies, Asters, and Allies | 1 | May (past peak) |
| 23 | Redstem Stork's-bill | Erodium cicutarium | Geranium family | 1 | May (past peak) |
| 24 | Threeleaf Foamflower | Tiarella trifoliata | saxifrage family | 1 | Jul (past peak) |
| 25 | Common Selfheal | Prunella vulgaris | Mint Family | 1 | Jul (past peak) |
| 26 | Poison Hemlock | Conium maculatum | carrot family | 1 | Jul (past peak) |
| 27 | Field Bindweed | Convolvulus arvensis | bindweed family | 1 | Jun (past peak) |
| 28 | Bladder Campion | Silene vulgaris | pink family | 1 | Oct (peak) |
| 29 | Herb Robert | Geranium robertianum | Geranium family | 1 | Sep (past peak) |
| 30 | Wild Teasel | Dipsacus fullonum | honeysuckle family | 1 | Oct (peak) |
| 31 | Oxeye Daisy | Leucanthemum vulgare | Sunflowers, Daisies, Asters, and Allies | 1 | Jul (past peak) |
| 32 | Purple Loosestrife | Lythrum salicaria | lythrum family | 1 | Oct (peak) |
| 33 | Deptford pink | Dianthus armeria | pink family | 1 | Jul (past peak) |
| 34 | Virginia strawberry | Fragaria virginiana | rose family | 1 | Jun (past peak) |
| 35 | Common Sneezeweed | Helenium autumnale | Sunflowers, Daisies, Asters, and Allies | 1 | Sep (past peak) |
| 36 | Twinflower | Linnaea borealis | honeysuckle family | 1 | Jul (past peak) |
| 37 | Upright Prairie Coneflower | Ratibida columnifera | Sunflowers, Daisies, Asters, and Allies | 1 | Jul (past peak) |
| 38 | Edible Valerian | Valeriana edulis | honeysuckle family | 1 | Jun (past peak) |
| 39 | Western Harebell | Campanula petiolata | bellflower family | 1 | Jul (past peak) |