Wildflowers Blooming in Washington in May (60 Species)

60 wildflowers were recorded blooming in Washington 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

Pacific trillium1,177 obs.

Small Camas819 obs.

Fringe Cups684 obs.

Pacific Bleeding Heart652 obs.

Western Starflower631 obs.

Herb Robert570 obs.

Checker Lily545 obs.

Thimbleberry479 obs.

Large-Flowered Triteleia462 obs.

Orange Honeysuckle439 obs.

Lawn daisy419 obs.

Creeping buttercup379 obs.

All wildflowers blooming in Washington in May

#	Species	Scientific name	Family	Obs.	Peak in state
1	Pacific trillium	Trillium ovatum	Herb-Paris, False Hellebores, Trilliums and allies	1,177	Apr (past peak)
2	Small Camas	Camassia quamash	agave and allies	819	May (peak)
3	Fringe Cups	Tellima grandiflora	saxifrage family	684	May (peak)
4	Pacific Bleeding Heart	Dicentra formosa	Poppy Family	652	May (peak)
5	Western Starflower	Lysimachia latifolia	primrose family	631	May (peak)
6	Herb Robert	Geranium robertianum	Geranium family	570	May (peak)
7	Checker Lily	Fritillaria affinis	lily family	545	May (peak)
8	Thimbleberry	Rubus parviflorus	rose family	479	May (peak)
9	Large-Flowered Triteleia	Triteleia grandiflora	agave and allies	462	May (peak)
10	Orange Honeysuckle	Lonicera ciliosa	honeysuckle family	439	May (peak)
11	Lawn daisy	Bellis perennis	Sunflowers, Daisies, Asters, and Allies	419	Apr (past peak)
12	Creeping buttercup	Ranunculus repens	buttercup family	379	May (peak)
13	Common Hawthorn	Crataegus monogyna	rose family	334	May (peak)
14	Scotch Broom	Cytisus scoparius	Legumes	313	May (peak)
15	Trailing Blackberry	Rubus ursinus	rose family	303	May (peak)
16	Shortspur Seablush	Plectritis congesta	honeysuckle family	303	May (peak)
17	Salmonberry	Rubus spectabilis	rose family	290	Apr (past peak)
18	Arrowleaf Balsamroot	Balsamorhiza sagittata	Sunflowers, Daisies, Asters, and Allies	271	May (peak)
19	Western Columbine	Aquilegia formosa	buttercup family	269	Jun (rising)
20	Salal	Gaultheria shallon	heath family	269	Jun (rising)
21	Spotted Coralroot	Corallorhiza maculata	Orchids	255	May (peak)
22	Rugosa Rose	Rosa rugosa	rose family	240	May (peak)
23	Saskatoon	Amelanchier alnifolia	rose family	234	Apr (past peak)
24	Threeleaf Foamflower	Tiarella trifoliata	saxifrage family	233	Jul (rising)
25	Candy Flower	Claytonia sibirica	Pussypaw Family	233	Apr (past peak)
26	Glacier Lily	Erythronium grandiflorum	lily family	205	May (peak)
27	Barestem Biscuitroot	Lomatium nudicaule	carrot family	197	May (peak)
28	Bitterroot	Lewisia rediviva	Pussypaw Family	192	May (peak)
29	Great Camas	Camassia leichtlinii	agave and allies	191	May (peak)
30	Yellow Iris	Iris pseudacorus	iris family	168	May (peak)
31	Solomon's plume	Maianthemum racemosum	agave and allies	160	May (peak)
32	Purple Foxglove	Digitalis purpurea	Plantain Family	145	Jun (rising)
33	Common Vetch	Vicia sativa	Legumes	141	May (peak)
34	Coastal Manroot	Marah oregana	gourd family	140	May (peak)
35	Red-Berried Elder	Sambucus racemosa	elder family	139	Apr (past peak)
36	Red-flowering Currant	Ribes sanguineum	Gooseberry Family	137	Apr (past peak)
37	Arrowleaf Buckwheat	Eriogonum compositum	knotweed family	136	May (peak)
38	Annual Honesty	Lunaria annua	mustard family	134	Apr (past peak)
39	Bearberry	Arctostaphylos uva-ursi	heath family	132	May (peak)
40	Star-Flowered Lily-Of-The-Valley	Maianthemum stellatum	agave and allies	131	May (peak)
41	Twinberry Honeysuckle	Lonicera involucrata	honeysuckle family	130	May (peak)
42	Stream Violet	Viola glabella	Violet Family	122	Apr (past peak)
43	Common Yarrow	Achillea millefolium	Sunflowers, Daisies, Asters, and Allies	118	Jul (rising)
44	California poppy	Eschscholzia californica	Poppy Family	113	May (peak)
45	Red Osier Dogwood	Cornus sericea	Dogwood family	110	May (peak)
46	Baldhip Rose	Rosa gymnocarpa	rose family	108	May (peak)
47	Subterranean Clover	Trifolium subterraneum	Legumes	106	May (peak)
48	Hooker's onion	Allium acuminatum	amaryllis, onions, and allies	105	Jun (rising)
49	Antelope Bitterbrush	Purshia tridentata	rose family	104	May (peak)
50	Redstem Stork's-bill	Erodium cicutarium	Geranium family	103	Apr (past peak)