Idaho in bloom

Idaho bloom calendar

Darker = more flowering sightings that month. Based on iNaturalist research-grade observations in Idaho 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.

• Rosaceae (21): Roses (genus Rosa), Thimbleberry, Chokecherry, Ocean spray, Shrubby cinquefoil, Woodland strawberry, Prairie smoke, Saskatoon and 13 more
• Asteraceae (17): Common yarrow, Chicory, Bull thistle, Common dandelion, Creeping thistle, Common sunflower, Rubber rabbitbrush, Pearly everlasting and 9 more
• Ranunculaceae (7): Red baneberry, Columbian monkshood, Upland larkspur, Sagebrush buttercup, Curveseed butterwort, Western white clematis, Piper's anemone
• Fabaceae (6): White clover, Red clover, Yellow sweetclover, Woollypod milkvetch, Western redbud, American yellowwood
• Liliaceae (6): Glacier lily, Bride's bonnet, Yellow fritillary, Sagebrush mariposa lily, White mariposa lily, Garden tulip
• Lamiaceae (5): Common selfheal, Catnip, Nettle-leaf giant hyssop, Bluebeard, Russian sage
• Asparagaceae (4): Solomon's plume (false Solomon's seal), Star-flowered lily-of-the-valley, Small camas, Large-flowered triteleia
• Caprifoliaceae (4): Wild teasel, Common snowberry, Utah honeysuckle, Weigela
• Viburnaceae (4): Blue elder, Japanese snowball viburnum, Arrowwood viburnum, Koreanspice viburnum
• Oleaceae (4): Purple lilac, Border forsythia, Japanese tree lilac, Meyer lilac
• Ericaceae (3): Woodland pinedrops, Pipsissewa, Japanese andromeda
• Magnoliaceae (3): Southern magnolia, Star magnolia, Saucer magnolia
• Orchidaceae (3): Western rattlesnake plantain, Spotted coralroot, White bog orchid
• Cornaceae (3): Red osier dogwood, Cornelian cherry, Kousa dogwood
• Polemoniaceae (3): Scarlet gilia, Longleaf phlox, Spiny phlox

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 (18): Blue elder, Yellow sweetclover, Plains pricklypear, Yellow salsify, Creeping mahonia, Sulfur buckwheat, Oregon grape, Common snowberry, Arrowleaf balsamroot, Wax currant, Prairie smoke, Common ninebark and 6 more
• High moisture use (suits wet spots) (14): Chicory, Fireweed, Thimbleberry, Common cowparsnip, Southern magnolia, Ocean spray, Elephant's-Head lousewort, Columbian monkshood, Small camas, Ballhead waterleaf, Sagebrush buttercup, Utah honeysuckle and 2 more
• Rapid growth rate (27): Common selfheal, Red clover, Chicory, Common dandelion, Fireweed, Thimbleberry, Blue elder, Yellow sweetclover, Common sunflower, Plains pricklypear, Chokecherry, Pearly everlasting and 15 more

How we picked these flowers

We started from iNaturalist's research-grade sightings in Idaho, 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 Idaho's official flowers, plus flowering shrubs and trees with at least 3 garden or 10 wild iNaturalist records in Idaho and popular garden flowers that iNaturalist users record growing in Idaho. Every flower needs a CC0 or CC BY photo.

Rare plant list: Idaho has no state law listing endangered or threatened plants, so we show NatureServe's Idaho ranks instead.
Invasive plant list: Idaho noxious weeds (IDAPA 02.06.09, Section 220)