60 wildflowers were recorded blooming in Tennessee in October in our iNaturalist sample; 11 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.
Top wildflowers in October

Great Blue Lobelia

White Snakeroot

Blue Mistflower

Common Blue Wood Aster

Low Smartweed
Fall Phlox

American Witch-Hazel

Tall Bellflower

Asiatic dayflower

Common Jewelweed
Wingstem

Tall Goldenrod
All wildflowers blooming in Tennessee in October
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | Great Blue Lobelia | Lobelia siphilitica | bellflower family | 42 | Sep (past peak) |
| 2 | White Snakeroot | Ageratina altissima | Sunflowers, Daisies, Asters, and Allies | 33 | Sep (past peak) |
| 3 | Blue Mistflower | Conoclinium coelestinum | Sunflowers, Daisies, Asters, and Allies | 33 | Sep (past peak) |
| 4 | Common Blue Wood Aster | Symphyotrichum cordifolium | Sunflowers, Daisies, Asters, and Allies | 33 | Oct (peak) |
| 5 | Low Smartweed | Persicaria longiseta | knotweed family | 31 | Oct (peak) |
| 6 | Fall Phlox | Phlox paniculata | phlox family | 27 | Oct (peak) |
| 7 | American Witch-Hazel | Hamamelis virginiana | witch-hazel family | 21 | Oct (peak) |
| 8 | Tall Bellflower | Campanulastrum americanum | bellflower family | 20 | Jun (past peak) |
| 9 | Asiatic dayflower | Commelina communis | Spiderworts | 19 | Sep (past peak) |
| 10 | Common Jewelweed | Impatiens capensis | balsam family | 16 | Sep (past peak) |
| 11 | Wingstem | Verbesina alternifolia | Sunflowers, Daisies, Asters, and Allies | 15 | Sep (past peak) |
| 12 | Tall Goldenrod | Solidago altissima | Sunflowers, Daisies, Asters, and Allies | 14 | Sep (past peak) |
| 13 | Frostweed | Verbesina virginica | Sunflowers, Daisies, Asters, and Allies | 14 | Sep (past peak) |
| 14 | Bluestem Goldenrod | Solidago caesia | Sunflowers, Daisies, Asters, and Allies | 13 | Oct (peak) |
| 15 | Pale Jewelweed | Impatiens pallida | balsam family | 12 | Aug (past peak) |
| 16 | Red Clover | Trifolium pratense | Legumes | 10 | May (past peak) |
| 17 | Purple Passionflower | Passiflora incarnata | Passionfruit Family | 9 | Aug (past peak) |
| 18 | Common Selfheal | Prunella vulgaris | Mint Family | 9 | Jul (past peak) |
| 19 | Mock Strawberry | Potentilla indica | rose family | 9 | Apr (past peak) |
| 20 | Chicory | Cichorium intybus | Sunflowers, Daisies, Asters, and Allies | 8 | Jul (past peak) |
| 21 | black-eyed Susan | Rudbeckia hirta | Sunflowers, Daisies, Asters, and Allies | 8 | Jun (past peak) |
| 22 | brown-eyed Susan | Rudbeckia triloba | Sunflowers, Daisies, Asters, and Allies | 8 | Aug (past peak) |
| 23 | Cardinal Flower | Lobelia cardinalis | bellflower family | 7 | Aug (past peak) |
| 24 | Whitemouth Dayflower | Commelina erecta | Spiderworts | 7 | Aug (past peak) |
| 25 | White Clover | Trifolium repens | Legumes | 7 | May (past peak) |
| 26 | New England aster | Symphyotrichum novae-angliae | Sunflowers, Daisies, Asters, and Allies | 7 | Oct (peak) |
| 27 | Downy Lobelia | Lobelia puberula | bellflower family | 7 | Sep (past peak) |
| 28 | Partridge Pea | Chamaecrista fasciculata | Legumes | 7 | Aug (past peak) |
| 29 | Citronella Horse Balm | Collinsonia canadensis | Mint Family | 7 | Sep (past peak) |
| 30 | Common Dandelion | Taraxacum officinale | Sunflowers, Daisies, Asters, and Allies | 6 | Apr (past peak) |
| 31 | Shaggy Soldier | Galinsoga quadriradiata | Sunflowers, Daisies, Asters, and Allies | 6 | Oct (peak) |
| 32 | Indian tobacco | Lobelia inflata | bellflower family | 6 | Aug (past peak) |
| 33 | Common Sneezeweed | Helenium autumnale | Sunflowers, Daisies, Asters, and Allies | 6 | Sep (past peak) |
| 34 | Frost Aster | Symphyotrichum pilosum | Sunflowers, Daisies, Asters, and Allies | 6 | Oct (peak) |
| 35 | Ghost Pipe | Monotropa uniflora | heath family | 5 | Jun (past peak) |
| 36 | Late Boneset | Eupatorium serotinum | Sunflowers, Daisies, Asters, and Allies | 5 | Sep (past peak) |
| 37 | Calico Aster | Symphyotrichum lateriflorum | Sunflowers, Daisies, Asters, and Allies | 5 | Oct (peak) |
| 38 | White Morning-glory | Ipomoea lacunosa | bindweed family | 5 | Sep (past peak) |
| 39 | White beggarticks | Bidens alba | Sunflowers, Daisies, Asters, and Allies | 5 | Oct (peak) |
| 40 | Field madder | Sherardia arvensis | madder family | 4 | Apr (past peak) |
| 41 | Henbit Deadnettle | Lamium amplexicaule | Mint Family | 4 | Mar (past peak) |
| 42 | Japanese honeysuckle | Lonicera japonica | honeysuckle family | 4 | May (past peak) |
| 43 | Broad-Leaved Goldenrod | Solidago flexicaulis | Sunflowers, Daisies, Asters, and Allies | 4 | Oct (peak) |
| 44 | American pokeweed | Phytolacca americana | Pokeweed Family | 3 | Jun (past peak) |
| 45 | Firewheel | Gaillardia pulchella | Sunflowers, Daisies, Asters, and Allies | 3 | Jun (past peak) |
| 46 | Plains Coreopsis | Coreopsis tinctoria | Sunflowers, Daisies, Asters, and Allies | 3 | Jun (past peak) |
| 47 | False Daisy | Eclipta prostrata | Sunflowers, Daisies, Asters, and Allies | 3 | Sep (past peak) |
| 48 | Crowpoison | Nothoscordum bivalve | amaryllis, onions, and allies | 3 | Mar (past peak) |
| 49 | White Wood Aster | Eurybia divaricata | Sunflowers, Daisies, Asters, and Allies | 3 | Sep (past peak) |
| 50 | Carolina horsenettle | Solanum carolinense | nightshade family | 2 | Jun (past peak) |