Wildflowers Blooming in Maine in May (60 Species)

60 wildflowers were recorded blooming in Maine in May in our iNaturalist sample; 40 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.

Apr May Jun Jul Aug Sep Oct

Top wildflowers in May

Northern Starflower750 obs.

Red Trillium687 obs.

Azure Bluet669 obs.

Painted Trillium437 obs.

Pink Lady's Slipper419 obs.

Rhodora360 obs.

Trailing Arbutus279 obs.

Sessile Bellwort271 obs.

Fringed Polygala271 obs.

Wood Anemone237 obs.

Bluebead Lily218 obs.

Threeleaf Goldthread214 obs.

All wildflowers blooming in Maine in May

#	Species	Scientific name	Family	Obs.	Peak in state
1	Northern Starflower	Lysimachia borealis	primrose family	750	May (peak)
2	Red Trillium	Trillium erectum	Herb-Paris, False Hellebores, Trilliums and allies	687	May (peak)
3	Azure Bluet	Houstonia caerulea	madder family	669	May (peak)
4	Painted Trillium	Trillium undulatum	Herb-Paris, False Hellebores, Trilliums and allies	437	May (peak)
5	Pink Lady's Slipper	Cypripedium acaule	Orchids	419	Jun (rising)
6	Rhodora	Rhododendron canadense	heath family	360	May (peak)
7	Trailing Arbutus	Epigaea repens	heath family	279	Apr (past peak)
8	Sessile Bellwort	Uvularia sessilifolia	Bellworts and allies	271	May (peak)
9	Fringed Polygala	Polygaloides paucifolia	milkworts	271	May (peak)
10	Wood Anemone	Anemonoides quinquefolia	buttercup family	237	May (peak)
11	Bluebead Lily	Clintonia borealis	lily family	218	May (peak)
12	Threeleaf Goldthread	Coptis trifolia	buttercup family	214	May (peak)
13	Virginia strawberry	Fragaria virginiana	rose family	203	May (peak)
14	Yellow Trout Lily	Erythronium americanum	lily family	193	May (peak)
15	Canadian bunchberry	Cornus canadensis	Dogwood family	156	Jun (rising)
16	Canada mayflower	Maianthemum canadense	agave and allies	155	Jun (rising)
17	Hobblebush	Viburnum lantanoides	elder family	152	May (peak)
18	American fly-honeysuckle	Lonicera canadensis	honeysuckle family	140	May (peak)
19	Lowbush Blueberry	Vaccinium angustifolium	heath family	136	May (peak)
20	Red Columbine	Aquilegia canadensis	buttercup family	133	May (peak)
21	Red-Berried Elder	Sambucus racemosa	elder family	115	May (peak)
22	Jack-in-the-Pulpit	Arisaema triphyllum	Arum Family	111	May (peak)
23	Swamp Laurel	Kalmia polifolia	heath family	105	Jun (rising)
24	Leatherleaf	Chamaedaphne calyculata	heath family	100	May (peak)
25	Wild Sarsaparilla	Aralia nudicaulis	ivy family	97	May (peak)
26	Dwarf Ginseng	Panax trifolius	ivy family	92	May (peak)
27	Chokecherry	Prunus virginiana	rose family	89	May (peak)
28	Marsh Marigold	Caltha palustris	buttercup family	87	May (peak)
29	Bloodroot	Sanguinaria canadensis	Poppy Family	84	Apr (past peak)
30	Ground-Ivy	Glechoma hederacea	Mint Family	69	May (peak)
31	Small-Flowered Buttercup	Ranunculus abortivus	buttercup family	68	May (peak)
32	Carolina Springbeauty	Claytonia caroliniana	Pussypaw Family	62	May (peak)
33	Moss Phlox	Phlox subulata	phlox family	62	May (peak)
34	Smooth Yellow Violet	Viola eriocarpa	Violet Family	62	May (peak)
35	Red Baneberry	Actaea rubra	buttercup family	61	May (peak)
36	Dutchman's breeches	Dicentra cucullaria	Poppy Family	53	May (peak)
37	European lily of the valley	Convallaria majalis	agave and allies	52	May (peak)
38	Wild Geranium	Geranium maculatum	Geranium family	51	Jun (rising)
39	Virginia saxifrage	Micranthes virginiensis	saxifrage family	42	May (peak)
40	Bearberry	Arctostaphylos uva-ursi	heath family	41	May (peak)
41	Garlic Mustard	Alliaria petiolata	mustard family	40	May (peak)
42	Colt's-Foot	Tussilago farfara	Sunflowers, Daisies, Asters, and Allies	39	Apr (past peak)
43	Creeping Foamflower	Tiarella stolonifera	saxifrage family	39	May (peak)
44	Nodding Trillium	Trillium cernuum	Herb-Paris, False Hellebores, Trilliums and allies	36	May (peak)
45	Common Serviceberry	Amelanchier arborea	rose family	34	May (peak)
46	Thyme-Leaved Speedwell	Veronica serpyllifolia	Plantain Family	33	May (peak)
47	Two-leaved Toothwort	Cardamine diphylla	mustard family	32	May (peak)
48	Rock Harlequin	Capnoides sempervirens	Poppy Family	31	Jun (rising)
49	Norway maple	Acer platanoides	soapberry family	28	May (peak)
50	Solomon's plume	Maianthemum racemosum	agave and allies	26	Jun (rising)