60 wildflowers were recorded blooming in Vermont in October in our iNaturalist sample; 1 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.
Top wildflowers in October

New England aster

Common Blue Wood Aster

American Witch-Hazel

Red Clover

Herb Robert
Chicory
Wild Carrot
Bluestem Goldenrod

Broad-Leaved Goldenrod

Whorled Wood Aster

Common Selfheal

Swamp Aster
All wildflowers blooming in Vermont in October
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | New England aster | Symphyotrichum novae-angliae | Sunflowers, Daisies, Asters, and Allies | 165 | Sep (past peak) |
| 2 | Common Blue Wood Aster | Symphyotrichum cordifolium | Sunflowers, Daisies, Asters, and Allies | 161 | Sep (past peak) |
| 3 | American Witch-Hazel | Hamamelis virginiana | witch-hazel family | 154 | Oct (peak) |
| 4 | Red Clover | Trifolium pratense | Legumes | 114 | Jun (past peak) |
| 5 | Herb Robert | Geranium robertianum | Geranium family | 86 | Jun (past peak) |
| 6 | Chicory | Cichorium intybus | Sunflowers, Daisies, Asters, and Allies | 70 | Jul (past peak) |
| 7 | Wild Carrot | Daucus carota | carrot family | 58 | Jul (past peak) |
| 8 | Bluestem Goldenrod | Solidago caesia | Sunflowers, Daisies, Asters, and Allies | 57 | Sep (past peak) |
| 9 | Broad-Leaved Goldenrod | Solidago flexicaulis | Sunflowers, Daisies, Asters, and Allies | 48 | Sep (past peak) |
| 10 | Whorled Wood Aster | Oclemena acuminata | Sunflowers, Daisies, Asters, and Allies | 48 | Aug (past peak) |
| 11 | Common Selfheal | Prunella vulgaris | Mint Family | 45 | Jul (past peak) |
| 12 | Swamp Aster | Symphyotrichum puniceum | Sunflowers, Daisies, Asters, and Allies | 44 | Sep (past peak) |
| 13 | Calico Aster | Symphyotrichum lateriflorum | Sunflowers, Daisies, Asters, and Allies | 43 | Sep (past peak) |
| 14 | black-eyed Susan | Rudbeckia hirta | Sunflowers, Daisies, Asters, and Allies | 37 | Jul (past peak) |
| 15 | Common Yarrow | Achillea millefolium | Sunflowers, Daisies, Asters, and Allies | 33 | Jul (past peak) |
| 16 | Common Wrinkle-Leaved Goldenrod | Solidago rugosa | Sunflowers, Daisies, Asters, and Allies | 33 | Sep (past peak) |
| 17 | Flat-Top White Aster | Doellingeria umbellata | Sunflowers, Daisies, Asters, and Allies | 30 | Aug (past peak) |
| 18 | Common Soapwort | Saponaria officinalis | pink family | 29 | Jul (past peak) |
| 19 | White Wood Aster | Eurybia divaricata | Sunflowers, Daisies, Asters, and Allies | 28 | Sep (past peak) |
| 20 | White Sweetclover | Melilotus albus | Legumes | 27 | Jul (past peak) |
| 21 | Common Toadflax | Linaria vulgaris | Plantain Family | 23 | Aug (past peak) |
| 22 | Indian tobacco | Lobelia inflata | bellflower family | 21 | Aug (past peak) |
| 23 | Common Dandelion | Taraxacum officinale | Sunflowers, Daisies, Asters, and Allies | 19 | May (past peak) |
| 24 | White Campion | Silene latifolia | pink family | 18 | Jun (past peak) |
| 25 | Purple Crownvetch | Securigera varia | Legumes | 18 | Jul (past peak) |
| 26 | White Clover | Trifolium repens | Legumes | 17 | Jun (past peak) |
| 27 | Daisy Fleabane | Erigeron strigosus | Sunflowers, Daisies, Asters, and Allies | 16 | Aug (past peak) |
| 28 | White Snakeroot | Ageratina altissima | Sunflowers, Daisies, Asters, and Allies | 16 | Sep (past peak) |
| 29 | Orange Hawkweed | Pilosella aurantiaca | Sunflowers, Daisies, Asters, and Allies | 14 | Jun (past peak) |
| 30 | Pearly Everlasting | Anaphalis margaritacea | Sunflowers, Daisies, Asters, and Allies | 13 | Aug (past peak) |
| 31 | Pineapple-Weed | Matricaria discoidea | Sunflowers, Daisies, Asters, and Allies | 13 | Jul (past peak) |
| 32 | Annual Fleabane | Erigeron annuus | Sunflowers, Daisies, Asters, and Allies | 13 | Jul (past peak) |
| 33 | Large-Leaved Aster | Eurybia macrophylla | Sunflowers, Daisies, Asters, and Allies | 13 | Aug (past peak) |
| 34 | Common Jewelweed | Impatiens capensis | balsam family | 12 | Aug (past peak) |
| 35 | Oxeye Daisy | Leucanthemum vulgare | Sunflowers, Daisies, Asters, and Allies | 12 | Jun (past peak) |
| 36 | Shaggy Soldier | Galinsoga quadriradiata | Sunflowers, Daisies, Asters, and Allies | 12 | Sep (past peak) |
| 37 | Purple-Flowered Raspberry | Rubus odoratus | rose family | 12 | Jul (past peak) |
| 38 | Great Mullein | Verbascum thapsus | figwort family | 11 | Jul (past peak) |
| 39 | Spotted Knapweed | Centaurea stoebe | Sunflowers, Daisies, Asters, and Allies | 11 | Jul (past peak) |
| 40 | Wild Basil | Clinopodium vulgare | Mint Family | 11 | Jul (past peak) |
| 41 | Fall Phlox | Phlox paniculata | phlox family | 11 | Aug (past peak) |
| 42 | Creeping buttercup | Ranunculus repens | buttercup family | 10 | Jun (past peak) |
| 43 | Bladder Campion | Silene vulgaris | pink family | 10 | Jun (past peak) |
| 44 | Canadian bunchberry | Cornus canadensis | Dogwood family | 9 | Jun (past peak) |
| 45 | Large White Trillium | Trillium grandiflorum | Herb-Paris, False Hellebores, Trilliums and allies | 9 | May (past peak) |
| 46 | Common Tansy | Tanacetum vulgare | Sunflowers, Daisies, Asters, and Allies | 9 | Aug (past peak) |
| 47 | Black Medick | Medicago lupulina | Legumes | 9 | Jun (past peak) |
| 48 | Deptford pink | Dianthus armeria | pink family | 9 | Jul (past peak) |
| 49 | Hoary Alyssum | Berteroa incana | mustard family | 9 | Aug (past peak) |
| 50 | Hop Trefoil | Trifolium campestre | Legumes | 8 | Jul (past peak) |