45 wildflowers were recorded blooming in North Dakota in September in our iNaturalist sample; 7 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.
Top wildflowers in September
Curlycup Gumweed
Flower-Of-An-Hour
Creeping Thistle
Rocky Mountain Beeplant
Bird's-Foot Trefoil
Common Toadflax
Common Dandelion
Yellow Sweetclover
Red Clover
Purple Prairie Clover
Upright Prairie Coneflower
Bull Thistle
All wildflowers blooming in North Dakota in September
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | Curlycup Gumweed | Grindelia squarrosa | Sunflowers, Daisies, Asters, and Allies | 13 | Aug (past peak) |
| 2 | Flower-Of-An-Hour | Hibiscus trionum | Mallow and Hibiscus Family | 8 | Sep (peak) |
| 3 | Creeping Thistle | Cirsium arvense | Sunflowers, Daisies, Asters, and Allies | 7 | Jul (past peak) |
| 4 | Rocky Mountain Beeplant | Cleomella serrulata | Spider Flower Family | 7 | Aug (past peak) |
| 5 | Bird's-Foot Trefoil | Lotus corniculatus | Legumes | 6 | Jul (past peak) |
| 6 | Common Toadflax | Linaria vulgaris | Plantain Family | 6 | Sep (peak) |
| 7 | Common Dandelion | Taraxacum officinale | Sunflowers, Daisies, Asters, and Allies | 5 | May (past peak) |
| 8 | Yellow Sweetclover | Melilotus officinalis | Legumes | 5 | Jun (past peak) |
| 9 | Red Clover | Trifolium pratense | Legumes | 4 | Jun (past peak) |
| 10 | Purple Prairie Clover | Dalea purpurea | Legumes | 4 | Jul (past peak) |
| 11 | Upright Prairie Coneflower | Ratibida columnifera | Sunflowers, Daisies, Asters, and Allies | 4 | Jul (past peak) |
| 12 | Bull Thistle | Cirsium vulgare | Sunflowers, Daisies, Asters, and Allies | 3 | Aug (past peak) |
| 13 | Yellow Salsify | Tragopogon dubius | Sunflowers, Daisies, Asters, and Allies | 3 | Jun (past peak) |
| 14 | Alfalfa | Medicago sativa | Legumes | 3 | Jul (past peak) |
| 15 | White Sweetclover | Melilotus albus | Legumes | 3 | Jul (past peak) |
| 16 | Hoary Alyssum | Berteroa incana | mustard family | 3 | Jun (past peak) |
| 17 | Obedient Plant | Physostegia virginiana | Mint Family | 3 | Aug (past peak) |
| 18 | Cutleaf Coneflower | Rudbeckia laciniata | Sunflowers, Daisies, Asters, and Allies | 3 | Aug (past peak) |
| 19 | Eastern Black Nightshade | Solanum emulans | nightshade family | 3 | Sep (peak) |
| 20 | Purple Coneflower | Echinacea purpurea | Sunflowers, Daisies, Asters, and Allies | 2 | Aug (past peak) |
| 21 | Bittersweet Nightshade | Solanum dulcamara | nightshade family | 2 | Jul (past peak) |
| 22 | Rubber Rabbitbrush | Ericameria nauseosa | Sunflowers, Daisies, Asters, and Allies | 2 | Aug (past peak) |
| 23 | black-eyed Susan | Rudbeckia hirta | Sunflowers, Daisies, Asters, and Allies | 2 | Jul (past peak) |
| 24 | New England aster | Symphyotrichum novae-angliae | Sunflowers, Daisies, Asters, and Allies | 2 | Sep (peak) |
| 25 | Purple Crownvetch | Securigera varia | Legumes | 2 | Jul (past peak) |
| 26 | Butterfly Milkweed | Asclepias tuberosa | Dogbane Family | 1 | Sep (peak) |
| 27 | Common Morning-Glory | Ipomoea purpurea | bindweed family | 1 | Sep (peak) |
| 28 | Field Bindweed | Convolvulus arvensis | bindweed family | 1 | Jul (past peak) |
| 29 | Red Osier Dogwood | Cornus sericea | Dogwood family | 1 | Jun (past peak) |
| 30 | White Clover | Trifolium repens | Legumes | 1 | Jun (past peak) |
| 31 | Shepherd's-Purse | Capsella bursa-pastoris | mustard family | 1 | Jun (past peak) |
| 32 | Common Soapwort | Saponaria officinalis | pink family | 1 | Aug (past peak) |
| 33 | Common Motherwort | Leonurus cardiaca | Mint Family | 1 | Jul (past peak) |
| 34 | Black Medick | Medicago lupulina | Legumes | 1 | Jun (past peak) |
| 35 | Common Sunflower | Helianthus annuus | Sunflowers, Daisies, Asters, and Allies | 1 | Jul (past peak) |
| 36 | Great Mullein | Verbascum thapsus | figwort family | 1 | Jun (past peak) |
| 37 | Common Evening-Primrose | Oenothera biennis | evening primrose family | 1 | Aug (past peak) |
| 38 | White Campion | Silene latifolia | pink family | 1 | Jun (past peak) |
| 39 | Wild Bergamot | Monarda fistulosa | Mint Family | 1 | Jul (past peak) |
| 40 | spotted Joe-Pye weed | Eutrochium maculatum | Sunflowers, Daisies, Asters, and Allies | 1 | Aug (past peak) |
| 41 | Whorled Milkweed | Asclepias verticillata | Dogbane Family | 1 | Jul (past peak) |
| 42 | Scarlet Globemallow | Sphaeralcea coccinea | Mallow and Hibiscus Family | 1 | Jun (past peak) |
| 43 | White Meadowsweet | Spiraea alba | rose family | 1 | Jun (past peak) |
| 44 | Partridge Pea | Chamaecrista fasciculata | Legumes | 1 | Sep (peak) |
| 45 | Prairie Pasqueflower | Pulsatilla nuttalliana | buttercup family | 1 | Apr (past peak) |