44 wildflowers were recorded blooming in Nevada in September in our iNaturalist sample; 8 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.
Top wildflowers in September

Chinchweed

Trailing Windmills

Sacred Datura

Desert Willow

Desert Marigold

Puncture Vine

Rubber Rabbitbrush

Rocky Mountain Beeplant

Desert Trumpet

Silverleaf Nightshade
Apricot Globemallow

Marsh Fleabane
All wildflowers blooming in Nevada in September
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | Chinchweed | Pectis papposa | Sunflowers, Daisies, Asters, and Allies | 45 | Oct (rising) |
| 2 | Trailing Windmills | Allionia incarnata | four o'clock family | 42 | May (past peak) |
| 3 | Sacred Datura | Datura wrightii | nightshade family | 41 | Sep (peak) |
| 4 | Desert Willow | Chilopsis linearis | bignonia family | 39 | May (past peak) |
| 5 | Desert Marigold | Baileya multiradiata | Sunflowers, Daisies, Asters, and Allies | 34 | Apr (past peak) |
| 6 | Puncture Vine | Tribulus terrestris | caltrops | 33 | Sep (peak) |
| 7 | Rubber Rabbitbrush | Ericameria nauseosa | Sunflowers, Daisies, Asters, and Allies | 32 | Sep (peak) |
| 8 | Rocky Mountain Beeplant | Cleomella serrulata | Spider Flower Family | 27 | Aug (past peak) |
| 9 | Desert Trumpet | Eriogonum inflatum | knotweed family | 23 | May (past peak) |
| 10 | Silverleaf Nightshade | Solanum elaeagnifolium | nightshade family | 22 | Sep (peak) |
| 11 | Apricot Globemallow | Sphaeralcea ambigua | Mallow and Hibiscus Family | 21 | Apr (past peak) |
| 12 | Marsh Fleabane | Pluchea odorata | Sunflowers, Daisies, Asters, and Allies | 16 | Sep (peak) |
| 13 | Paperbag Bush | Scutellaria mexicana | Mint Family | 15 | May (past peak) |
| 14 | Alkali Heliotrope | Heliotropium curassavicum | borage family | 14 | Apr (past peak) |
| 15 | Desert Tobacco | Nicotiana obtusifolia | nightshade family | 14 | Mar (past peak) |
| 16 | Common Sunflower | Helianthus annuus | Sunflowers, Daisies, Asters, and Allies | 13 | Sep (peak) |
| 17 | Anderson's thistle | Cirsium andersonii | Sunflowers, Daisies, Asters, and Allies | 13 | Jul (past peak) |
| 18 | Rush Milkweed | Asclepias subulata | Dogbane Family | 10 | May (past peak) |
| 19 | Fendler's Sandmat | Euphorbia fendleri | Spurge Family | 10 | Jun (past peak) |
| 20 | Thickleaf Groundcherry | Physalis crassifolia | nightshade family | 8 | Apr (past peak) |
| 21 | Creosote Bush | Larrea tridentata | caltrops | 7 | Apr (past peak) |
| 22 | Great Mullein | Verbascum thapsus | figwort family | 6 | Jul (past peak) |
| 23 | Western Columbine | Aquilegia formosa | buttercup family | 5 | Jun (past peak) |
| 24 | Tall Evening Primrose | Oenothera elata | evening primrose family | 4 | Jul (past peak) |
| 25 | Bull Thistle | Cirsium vulgare | Sunflowers, Daisies, Asters, and Allies | 4 | Jul (past peak) |
| 26 | Naked Buckwheat | Eriogonum nudum | knotweed family | 4 | Jul (past peak) |
| 27 | Tree Tobacco | Nicotiana glauca | nightshade family | 4 | Nov (rising) |
| 28 | Mojave Woodyaster | Xylorhiza tortifolia | Sunflowers, Daisies, Asters, and Allies | 4 | Apr (past peak) |
| 29 | Sweetbush | Bebbia juncea | Sunflowers, Daisies, Asters, and Allies | 4 | Apr (past peak) |
| 30 | Spineless Horsebrush | Tetradymia canescens | Sunflowers, Daisies, Asters, and Allies | 4 | Jul (past peak) |
| 31 | Cobwebby Thistle | Cirsium occidentale | Sunflowers, Daisies, Asters, and Allies | 3 | Jun (past peak) |
| 32 | Field Bindweed | Convolvulus arvensis | bindweed family | 3 | Jun (past peak) |
| 33 | California Buckwheat | Eriogonum fasciculatum | knotweed family | 3 | Apr (past peak) |
| 34 | Lewis flax | Linum lewisii | Flax Family | 3 | Jun (past peak) |
| 35 | Parish's Goldeneye | Bahiopsis parishii | Sunflowers, Daisies, Asters, and Allies | 3 | Apr (past peak) |
| 36 | Redstem Stork's-bill | Erodium cicutarium | Geranium family | 2 | Mar (past peak) |
| 37 | Common Morning-Glory | Ipomoea purpurea | bindweed family | 2 | Sep (peak) |
| 38 | Common Yarrow | Achillea millefolium | Sunflowers, Daisies, Asters, and Allies | 2 | Jun (past peak) |
| 39 | Chicory | Cichorium intybus | Sunflowers, Daisies, Asters, and Allies | 2 | Jul (past peak) |
| 40 | California fuchsia | Epilobium canum | evening primrose family | 2 | Sep (peak) |
| 41 | Yellow Salsify | Tragopogon dubius | Sunflowers, Daisies, Asters, and Allies | 2 | Jun (past peak) |
| 42 | Monument Plant | Frasera speciosa | gentian family | 2 | Jul (past peak) |
| 43 | Narrowleaf Milkweed | Asclepias fascicularis | Dogbane Family | 2 | Jul (past peak) |
| 44 | Yellow Sweetclover | Melilotus officinalis | Legumes | 2 | Jul (past peak) |