Wildflowers Blooming in Oregon in May (60 Species)

60 wildflowers were recorded blooming in Oregon in May in our iNaturalist sample; 34 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Top wildflowers in May

Tolmie's pussy ears837 obs.

Western Columbine606 obs.

Scotch Broom588 obs.

Ookow576 obs.

Shortspur Seablush550 obs.

Pacific Bleeding Heart534 obs.

Small Camas519 obs.

Pacific trillium502 obs.

Great Camas458 obs.

Lawn daisy442 obs.

Coastal Manroot432 obs.

Fringe Cups424 obs.

All wildflowers blooming in Oregon in May

#	Species	Scientific name	Family	Obs.	Peak in state
1	Tolmie's pussy ears	Calochortus tolmiei	lily family	837	May (peak)
2	Western Columbine	Aquilegia formosa	buttercup family	606	May (peak)
3	Scotch Broom	Cytisus scoparius	Legumes	588	May (peak)
4	Ookow	Dichelostemma congestum	agave and allies	576	May (peak)
5	Shortspur Seablush	Plectritis congesta	honeysuckle family	550	May (peak)
6	Pacific Bleeding Heart	Dicentra formosa	Poppy Family	534	Apr (past peak)
7	Small Camas	Camassia quamash	agave and allies	519	Apr (past peak)
8	Pacific trillium	Trillium ovatum	Herb-Paris, False Hellebores, Trilliums and allies	502	Apr (past peak)
9	Great Camas	Camassia leichtlinii	agave and allies	458	May (peak)
10	Lawn daisy	Bellis perennis	Sunflowers, Daisies, Asters, and Allies	442	Apr (past peak)
11	Coastal Manroot	Marah oregana	gourd family	432	May (peak)
12	Fringe Cups	Tellima grandiflora	saxifrage family	424	May (peak)
13	Western Starflower	Lysimachia latifolia	primrose family	371	May (peak)
14	Thimbleberry	Rubus parviflorus	rose family	359	May (peak)
15	Candy Flower	Claytonia sibirica	Pussypaw Family	353	Apr (past peak)
16	Common Hawthorn	Crataegus monogyna	rose family	337	May (peak)
17	Creeping buttercup	Ranunculus repens	buttercup family	333	May (peak)
18	Large-Flowered Triteleia	Triteleia grandiflora	agave and allies	325	May (peak)
19	Barestem Biscuitroot	Lomatium nudicaule	carrot family	307	May (peak)
20	Common Cowparsnip	Heracleum maximum	carrot family	303	May (peak)
21	Herb Robert	Geranium robertianum	Geranium family	299	May (peak)
22	Common Woolly Sunflower	Eriophyllum lanatum	Sunflowers, Daisies, Asters, and Allies	290	Jun (rising)
23	Salal	Gaultheria shallon	heath family	270	May (peak)
24	Checker Lily	Fritillaria affinis	lily family	244	Apr (past peak)
25	Common Vetch	Vicia sativa	Legumes	243	May (peak)
26	Trailing Blackberry	Rubus ursinus	rose family	235	May (peak)
27	California poppy	Eschscholzia californica	Poppy Family	233	May (peak)
28	Subterranean Clover	Trifolium subterraneum	Legumes	211	Apr (past peak)
29	Hairy Vetch	Vicia villosa	Legumes	203	May (peak)
30	Orange Honeysuckle	Lonicera ciliosa	honeysuckle family	203	May (peak)
31	Arrowleaf Buckwheat	Eriogonum compositum	knotweed family	202	May (peak)
32	Solomon's plume	Maianthemum racemosum	agave and allies	201	May (peak)
33	Cornflower	Centaurea cyanus	Sunflowers, Daisies, Asters, and Allies	195	May (peak)
34	Pacific rhododendron	Rhododendron macrophyllum	heath family	194	Jun (rising)
35	Star-Flowered Lily-Of-The-Valley	Maianthemum stellatum	agave and allies	174	May (peak)
36	Saskatoon	Amelanchier alnifolia	rose family	161	Apr (past peak)
37	Oxeye Daisy	Leucanthemum vulgare	Sunflowers, Daisies, Asters, and Allies	160	May (peak)
38	Salmonberry	Rubus spectabilis	rose family	155	Apr (past peak)
39	Pacific poison oak	Toxicodendron diversilobum	Cashew Family	154	May (peak)
40	Common Yarrow	Achillea millefolium	Sunflowers, Daisies, Asters, and Allies	149	Jun (rising)
41	Oregon woodsorrel	Oxalis oregana	Woodsorrel Family	148	May (peak)
42	Stream Violet	Viola glabella	Violet Family	140	Apr (past peak)
43	Bitterroot	Lewisia rediviva	Pussypaw Family	137	May (peak)
44	Beach Strawberry	Fragaria chiloensis	rose family	137	May (peak)
45	Ribwort Plantain	Plantago lanceolata	Plantain Family	136	May (peak)
46	Spotted Coralroot	Corallorhiza maculata	Orchids	134	Jun (rising)
47	Greenleaf Manzanita	Arctostaphylos patula	heath family	134	May (peak)
48	White Brodiaea	Triteleia hyacinthina	agave and allies	131	Jun (rising)
49	Pacific Dogwood	Cornus nuttallii	Dogwood family	124	Apr (past peak)
50	Pale flax	Linum bienne	Flax Family	121	May (peak)