Oregon in bloom

Oregon bloom calendar

Darker = more flowering sightings that month. Based on iNaturalist research-grade observations in Oregon 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 (30): Roses (genus Rosa), Thimbleberry, Trailing blackberry, Salmonberry, Ocean spray, Osoberry, Rose spirea, Saskatoon and 22 more
• Asteraceae (13): Common yarrow, Chicory, Bull thistle, Creeping thistle, Common sunflower, Rubber rabbitbrush, Lawn daisy, Pearly everlasting and 5 more
• Ericaceae (10): Ghost pipe, Salal, Woodland pinedrops, Pipsissewa, Pacific rhododendron, Common manzanita, Catawba rhododendron, Japanese andromeda and 2 more
• Caprifoliaceae (9): Wild teasel, Twinberry honeysuckle, Common snowberry, Twinflower, Orange honeysuckle, Shortspur seablush, Seven-son flower, Weigela and 1 more
• Liliaceae (8): Checker lily, Tolmie's pussy ears, Columbia lily, Hooker's fairybells, Bride's bonnet, Giant white fawn lily, Largeflower fairybells, Garden tulip
• Fabaceae (7): White clover, Red clover, Common vetch, Broad-leaved sweet pea, Scotch broom, Western redbud, American yellowwood
• Oleaceae (7): Purple lilac, Border forsythia, Japanese tree lilac, Meyer lilac, Sweet olive, Chinese fringetree, Hairy lilac
• Asparagaceae (6): Solomon's plume (false Solomon's seal), Star-flowered lily-of-the-valley, Western Lily of the Valley, Small camas, Ookow, Great camas
• Viburnaceae (6): Red-berried elder, Japanese snowball viburnum, Arrowwood viburnum, Laurustinus, Koreanspice viburnum, Chinese snowball viburnum
• Lamiaceae (5): Common selfheal, Red deadnettle, Pennyroyal, Bluebeard, Russian sage
• Ranunculaceae (5): Western columbine, Red baneberry, Creeping buttercup, Columbian windflower, Columbian larkspur
• Hydrangeaceae (5): Sweet mock orange, Bigleaf hydrangea, Panicle hydrangea, Mountain hydrangea, Slender deutzia
• Aquifoliaceae (4): American holly, Winterberry, Inkberry, Japanese holly
• Cornaceae (4): Red osier dogwood, Western bunchberry, Cornelian cherry, Kousa dogwood
• Berberidaceae (3): Cascade oregon-grape, White inside-out flower, Vanilla leaf

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 (10): Broad-leaved sweet pea, Salmonberry, Common snowberry, Cascade oregon-grape, Scotch broom, Wax currant, Common ninebark, Common hawthorn, Western redbud, Common manzanita
• High moisture use (suits wet spots) (17): Chicory, Fireweed, Thimbleberry, Common cowparsnip, Common vetch, Salal, Southern magnolia, Ocean spray, Twinberry honeysuckle, Winterberry, Inkberry, Pacific rhododendron and 5 more
• Rapid growth rate (23): Common selfheal, Red clover, Chicory, Fireweed, Thimbleberry, Common vetch, Trailing blackberry, Common sunflower, Salal, Western columbine, Pearly everlasting, Pacific bleeding heart and 11 more

How we picked these flowers

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

Rare plant list: Oregon endangered and threatened plants (OAR 603-073-0070)
Invasive plant list: Oregon noxious weed quarantine, A and B weeds (OAR 603-052-1200)