Oklahoma in bloom

Oklahoma bloom calendar

Darker = more flowering sightings that month. Based on iNaturalist research-grade observations in Oklahoma marked “Flowering,” as of October 17–23, 2026. Garden flowers have few records because research-grade data leaves out planted ones.

Families on this list

The plant families with the most flowers on this list, from iNaturalist taxonomy. Within each family, the most-observed flowers come first.

• Asteraceae (26): Common yarrow, Black-eyed Susan, Common dandelion, Late boneset, Upright prairie coneflower, Wingstem, Common sunflower, Frostweed and 18 more
• Fabaceae (15): White clover, Eastern redbud, Partridge pea, Common vetch, Persian silk tree, Hairy vetch, Yellow sweetclover, Chinese bushclover and 7 more
• Rosaceae (14): Mock strawberry, Common ninebark, Downy serviceberry, Black chokeberry, Red chokeberry, Flowering quince, Japanese kerria, European pear and 6 more
• Lamiaceae (11): Common selfheal, Red deadnettle, American beautyberry, Henbit deadnettle, Wild bergamot, Lyreleaf sage, American germander, Lemon beebalm and 3 more
• Caprifoliaceae (6): Amur honeysuckle, Japanese honeysuckle, Coral honeysuckle, Seven-son flower, Weigela, Glossy abelia
• Rubiaceae (5): Buttonbush, Field madder, Tiny bluet, Diamond-flowers, Gardenia
• Apocynaceae (4): Butterfly milkweed, Green antelopehorns, Green comet milkweed, Honey-vine climbing milkweed
• Aquifoliaceae (4): American holly, Yaupon holly, Inkberry, Japanese holly
• Viburnaceae (4): Japanese snowball viburnum, Nannyberry, Koreanspice viburnum, Chinese snowball viburnum
• Oleaceae (4): Purple lilac, Border forsythia, Japanese tree lilac, Chinese fringetree
• Solanaceae (3): Carolina horsenettle, Silverleaf nightshade, Western horsenettle
• Magnoliaceae (3): Southern magnolia, Star magnolia, Saucer magnolia
• Cornaceae (3): Flowering dogwood, Roughleaf dogwood, Kousa dogwood
• Hydrangeaceae (3): Sweet mock orange, Bigleaf hydrangea, Panicle hydrangea

Shortlists by growing conditions

Flowers on this list whose USDA PLANTS characteristics data gives the rating shown. USDA only rates some species, so these lists are not complete.

• High drought tolerance (11): Eastern redbud, American beautyberry, Butterfly milkweed, American trumpet vine, Yaupon holly, Yellow sweetclover, Buffalo gourd, Western soapberry, Dotted gayfeather, New Jersey tea, Common ninebark
• High moisture use (suits wet spots) (12): American beautyberry, Buttonbush, Wild bergamot, Common vetch, American germander, Heavenly bamboo, Southern magnolia, Red buckeye, Plains coreopsis, Inkberry, Red chokeberry, Bridal veil spirea
• Rapid growth rate (23): American pokeweed, Common selfheal, Japanese honeysuckle, Black-eyed Susan, American trumpet vine, Common dandelion, Partridge pea, Common vetch, Persian silk tree, Hairy vetch, Yellow sweetclover, Common sunflower and 11 more

How we picked these flowers

We started from iNaturalist's research-grade sightings in Oklahoma, most-observed first, left out grasses, sedges, trees and other plants with tiny or wind-pollinated flowers (plus poison ivy), kept at most three species per genus, and added Oklahoma's official flowers, plus flowering shrubs and trees with at least 3 garden or 10 wild iNaturalist records in Oklahoma and popular garden flowers that iNaturalist users record growing in Oklahoma. Every flower needs a CC0 or CC BY photo.

Rare plant list: Oklahoma has no state law listing endangered or threatened plants, so we show NatureServe's Oklahoma ranks instead.
Invasive plant list: Oklahoma Noxious Weed Law (2 O.S. § 3-220)