Wildflowers Blooming in Massachusetts in May (60 Species)

60 wildflowers were recorded blooming in Massachusetts in May in our iNaturalist sample; 39 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.

Mar Apr May Jun Jul Aug Sep Oct Nov

Top wildflowers in May

Northern Starflower1,803 obs.

Pink Lady's Slipper1,732 obs.

Azure Bluet958 obs.

Wood Anemone741 obs.

Wild Geranium553 obs.

Canada mayflower501 obs.

Garlic Mustard423 obs.

Fringed Polygala423 obs.

Red Trillium403 obs.

Beach Plum398 obs.

Red Columbine375 obs.

Jack-in-the-Pulpit326 obs.

All wildflowers blooming in Massachusetts in May

#	Species	Scientific name	Family	Obs.	Peak in state
1	Northern Starflower	Lysimachia borealis	primrose family	1,803	May (peak)
2	Pink Lady's Slipper	Cypripedium acaule	Orchids	1,732	May (peak)
3	Azure Bluet	Houstonia caerulea	madder family	958	May (peak)
4	Wood Anemone	Anemonoides quinquefolia	buttercup family	741	May (peak)
5	Wild Geranium	Geranium maculatum	Geranium family	553	May (peak)
6	Canada mayflower	Maianthemum canadense	agave and allies	501	May (peak)
7	Garlic Mustard	Alliaria petiolata	mustard family	423	May (peak)
8	Fringed Polygala	Polygaloides paucifolia	milkworts	423	May (peak)
9	Red Trillium	Trillium erectum	Herb-Paris, False Hellebores, Trilliums and allies	403	Apr (past peak)
10	Beach Plum	Prunus maritima	rose family	398	May (peak)
11	Red Columbine	Aquilegia canadensis	buttercup family	375	May (peak)
12	Jack-in-the-Pulpit	Arisaema triphyllum	Arum Family	326	May (peak)
13	Painted Trillium	Trillium undulatum	Herb-Paris, False Hellebores, Trilliums and allies	324	May (peak)
14	Sessile Bellwort	Uvularia sessilifolia	Bellworts and allies	317	May (peak)
15	Greater celandine	Chelidonium majus	Poppy Family	303	May (peak)
16	common star-of-Bethlehem	Ornithogalum umbellatum	agave and allies	293	May (peak)
17	European lily of the valley	Convallaria majalis	agave and allies	279	May (peak)
18	Ground-Ivy	Glechoma hederacea	Mint Family	259	Apr (past peak)
19	Wild Sarsaparilla	Aralia nudicaulis	ivy family	250	May (peak)
20	Annual Honesty	Lunaria annua	mustard family	245	May (peak)
21	Marsh Marigold	Caltha palustris	buttercup family	244	Apr (past peak)
22	Dwarf Ginseng	Panax trifolius	ivy family	240	May (peak)
23	Black Cherry	Prunus serotina	rose family	222	May (peak)
24	Moss Phlox	Phlox subulata	phlox family	177	May (peak)
25	Autumn Olive	Elaeagnus umbellata	oleaster family	172	May (peak)
26	Creeping Foamflower	Tiarella stolonifera	saxifrage family	157	May (peak)
27	Carpet Bugle	Ajuga reptans	Mint Family	150	May (peak)
28	Lesser Periwinkle	Vinca minor	Dogbane Family	147	Apr (past peak)
29	Solomon's plume	Maianthemum racemosum	agave and allies	146	May (peak)
30	Threeleaf Goldthread	Coptis trifolia	buttercup family	135	May (peak)
31	Canada toadflax	Linaria canadensis	Plantain Family	131	Jun (rising)
32	Yellow Star Grass	Hypoxis hirsuta	Stargrasses and allies	129	May (peak)
33	Yellow Trout Lily	Erythronium americanum	lily family	128	Apr (past peak)
34	Large White Trillium	Trillium grandiflorum	Herb-Paris, False Hellebores, Trilliums and allies	126	May (peak)
35	Dame's Rocket	Hesperis matronalis	mustard family	123	May (peak)
36	Bluebead Lily	Clintonia borealis	lily family	121	May (peak)
37	Trailing Arbutus	Epigaea repens	heath family	120	Apr (past peak)
38	Bird's Foot Violet	Viola pedata	Violet Family	116	May (peak)
39	golden Alexanders	Zizia aurea	carrot family	107	May (peak)
40	Virginia strawberry	Fragaria virginiana	rose family	105	May (peak)
41	Red Deadnettle	Lamium purpureum	Mint Family	104	Apr (past peak)
42	Lowbush Blueberry	Vaccinium angustifolium	heath family	98	May (peak)
43	Alder Buckthorn	Frangula alnus	buckthorn family	97	Jun (rising)
44	Rock Harlequin	Capnoides sempervirens	Poppy Family	93	May (peak)
45	One-Flowered Cancer-Root	Aphyllon uniflorum	broomrape family	93	May (peak)
46	Hobblebush	Viburnum lantanoides	elder family	89	May (peak)
47	Lesser Celandine	Ficaria verna	buttercup family	88	Apr (past peak)
48	Bearberry	Arctostaphylos uva-ursi	heath family	87	May (peak)
49	Common Dandelion	Taraxacum officinale	Sunflowers, Daisies, Asters, and Allies	81	Apr (past peak)
50	Herb Robert	Geranium robertianum	Geranium family	79	May (peak)