46 wildflowers were recorded blooming in Arizona in October in our iNaturalist sample; 5 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.
Top wildflowers in October
Chinchweed
Trailing Windmills
Saguaro
Desert Tobacco
Desert Thorn-Apple
Sacred Datura
Rock Hibiscus
Creosote Bush
Parish's Goldeneye
Rubber Rabbitbrush
Cowpen Daisy
California fuchsia
All wildflowers blooming in Arizona in October
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | Chinchweed | Pectis papposa | Sunflowers, Daisies, Asters, and Allies | 89 | Oct (peak) |
| 2 | Trailing Windmills | Allionia incarnata | four o'clock family | 51 | Apr (past peak) |
| 3 | Saguaro | Carnegiea gigantea | cacti | 31 | May (past peak) |
| 4 | Desert Tobacco | Nicotiana obtusifolia | nightshade family | 29 | Apr (past peak) |
| 5 | Desert Thorn-Apple | Datura discolor | nightshade family | 28 | Oct (peak) |
| 6 | Sacred Datura | Datura wrightii | nightshade family | 26 | May (past peak) |
| 7 | Rock Hibiscus | Hibiscus denudatus | Mallow and Hibiscus Family | 23 | Mar (past peak) |
| 8 | Creosote Bush | Larrea tridentata | caltrops | 21 | Apr (past peak) |
| 9 | Parish's Goldeneye | Bahiopsis parishii | Sunflowers, Daisies, Asters, and Allies | 21 | Apr (past peak) |
| 10 | Rubber Rabbitbrush | Ericameria nauseosa | Sunflowers, Daisies, Asters, and Allies | 16 | Oct (peak) |
| 11 | Cowpen Daisy | Verbesina encelioides | Sunflowers, Daisies, Asters, and Allies | 14 | Sep (past peak) |
| 12 | California fuchsia | Epilobium canum | evening primrose family | 13 | Oct (peak) |
| 13 | Puncture Vine | Tribulus terrestris | caltrops | 13 | Aug (past peak) |
| 14 | Mule Fat | Baccharis salicifolia | Sunflowers, Daisies, Asters, and Allies | 12 | Aug (past peak) |
| 15 | Desert Marigold | Baileya multiradiata | Sunflowers, Daisies, Asters, and Allies | 11 | Apr (past peak) |
| 16 | Sweetbush | Bebbia juncea | Sunflowers, Daisies, Asters, and Allies | 10 | Apr (past peak) |
| 17 | Camphorweed | Heterotheca subaxillaris | Sunflowers, Daisies, Asters, and Allies | 10 | Sep (past peak) |
| 18 | Snapdragon Vine | Maurandella antirrhiniflora | Plantain Family | 10 | Aug (past peak) |
| 19 | Rocky Mountain Beeplant | Cleomella serrulata | Spider Flower Family | 10 | Aug (past peak) |
| 20 | Ocotillo | Fouquieria splendens | ocotillo family | 9 | Apr (past peak) |
| 21 | Tree Tobacco | Nicotiana glauca | nightshade family | 9 | Apr (past peak) |
| 22 | Great Mullein | Verbascum thapsus | figwort family | 9 | Aug (past peak) |
| 23 | Rush Milkweed | Asclepias subulata | Dogbane Family | 9 | Apr (past peak) |
| 24 | Desert Lavender | Condea emoryi | Mint Family | 9 | Mar (past peak) |
| 25 | Desert Trumpet | Eriogonum inflatum | knotweed family | 8 | May (past peak) |
| 26 | Plains Coreopsis | Coreopsis tinctoria | Sunflowers, Daisies, Asters, and Allies | 8 | Jul (past peak) |
| 27 | Blackfoot Daisy | Melampodium leucanthum | Sunflowers, Daisies, Asters, and Allies | 8 | Apr (past peak) |
| 28 | Purple Groundcherry | Quincula lobata | nightshade family | 7 | Apr (past peak) |
| 29 | California Barrel Cactus | Ferocactus cylindraceus | cacti | 7 | May (past peak) |
| 30 | Fendler's Sandmat | Euphorbia fendleri | Spurge Family | 7 | May (past peak) |
| 31 | Cardinal Flower | Lobelia cardinalis | bellflower family | 6 | Sep (past peak) |
| 32 | Scarlet Gilia | Ipomopsis aggregata | phlox family | 6 | Aug (past peak) |
| 33 | Common Sunflower | Helianthus annuus | Sunflowers, Daisies, Asters, and Allies | 6 | Sep (past peak) |
| 34 | Marsh Fleabane | Pluchea odorata | Sunflowers, Daisies, Asters, and Allies | 6 | Oct (peak) |
| 35 | Silverleaf Nightshade | Solanum elaeagnifolium | nightshade family | 6 | Aug (past peak) |
| 36 | Texas bindweed | Convolvulus equitans | bindweed family | 6 | May (past peak) |
| 37 | Apricot Globemallow | Sphaeralcea ambigua | Mallow and Hibiscus Family | 5 | Apr (past peak) |
| 38 | Chuparosa | Justicia californica | Acanthus Family | 4 | Mar (past peak) |
| 39 | Desert Willow | Chilopsis linearis | bignonia family | 4 | May (past peak) |
| 40 | Tall Evening Primrose | Oenothera elata | evening primrose family | 3 | Aug (past peak) |
| 41 | Common Yarrow | Achillea millefolium | Sunflowers, Daisies, Asters, and Allies | 3 | Jul (past peak) |
| 42 | Whitemouth Dayflower | Commelina erecta | Spiderworts | 3 | Aug (past peak) |
| 43 | Alkali Heliotrope | Heliotropium curassavicum | borage family | 3 | Mar (past peak) |
| 44 | Cardinal Catchfly | Silene laciniata | pink family | 3 | Aug (past peak) |
| 45 | Greenspot Nightshade | Solanum douglasii | nightshade family | 3 | Jan (past peak) |
| 46 | Spotted Knapweed | Centaurea stoebe | Sunflowers, Daisies, Asters, and Allies | 3 | Jul (past peak) |