Wildflowers Blooming in Idaho in August (60 Species)

60 wildflowers were recorded blooming in Idaho in August in our iNaturalist sample; 18 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

Top wildflowers in August

Fireweed168 obs.

White Mariposa Lily94 obs.

Fringed Grass of Parnassus65 obs.

Rocky Mountain Beeplant59 obs.

Lewis' monkeyflower41 obs.

Pearly Everlasting38 obs.

Showy Milkweed38 obs.

Curlycup Gumweed33 obs.

Pipsissewa31 obs.

Common Yarrow23 obs.

Mountain Bog Gentian23 obs.

Purple Loosestrife16 obs.

All wildflowers blooming in Idaho in August

#	Species	Scientific name	Family	Obs.	Peak in state
1	Fireweed	Chamaenerion angustifolium	evening primrose family	168	Jul (past peak)
2	White Mariposa Lily	Calochortus eurycarpus	lily family	94	Jul (past peak)
3	Fringed Grass of Parnassus	Parnassia fimbriata	staff-vine family	65	Aug (peak)
4	Rocky Mountain Beeplant	Cleomella serrulata	Spider Flower Family	59	Aug (peak)
5	Lewis' monkeyflower	Erythranthe lewisii	lopseed family	41	Jul (past peak)
6	Pearly Everlasting	Anaphalis margaritacea	Sunflowers, Daisies, Asters, and Allies	38	Aug (peak)
7	Showy Milkweed	Asclepias speciosa	Dogbane Family	38	Jun (past peak)
8	Curlycup Gumweed	Grindelia squarrosa	Sunflowers, Daisies, Asters, and Allies	33	Aug (peak)
9	Pipsissewa	Chimaphila umbellata	heath family	31	Jul (past peak)
10	Common Yarrow	Achillea millefolium	Sunflowers, Daisies, Asters, and Allies	23	Jul (past peak)
11	Mountain Bog Gentian	Gentiana calycosa	gentian family	23	Aug (peak)
12	Purple Loosestrife	Lythrum salicaria	lythrum family	16	Aug (peak)
13	Swamp Milkweed	Asclepias incarnata	Dogbane Family	16	Jul (past peak)
14	Narrowleaf Milkweed	Asclepias fascicularis	Dogbane Family	15	Jul (past peak)
15	Bittersweet Nightshade	Solanum dulcamara	nightshade family	13	Jun (past peak)
16	Rubber Rabbitbrush	Ericameria nauseosa	Sunflowers, Daisies, Asters, and Allies	13	Sep (rising)
17	Common Tansy	Tanacetum vulgare	Sunflowers, Daisies, Asters, and Allies	12	Jul (past peak)
18	Common Sunflower	Helianthus annuus	Sunflowers, Daisies, Asters, and Allies	12	Aug (peak)
19	Spotted Knapweed	Centaurea stoebe	Sunflowers, Daisies, Asters, and Allies	11	Oct (rising)
20	Scarlet Gilia	Ipomopsis aggregata	phlox family	10	Jul (past peak)
21	Field Bindweed	Convolvulus arvensis	bindweed family	10	Jun (past peak)
22	Rose Spirea	Spiraea douglasii	rose family	10	Jul (past peak)
23	Western Columbine	Aquilegia formosa	buttercup family	9	Jun (past peak)
24	Puncture Vine	Tribulus terrestris	caltrops	9	Aug (peak)
25	Common Toadflax	Linaria vulgaris	Plantain Family	8	Aug (peak)
26	Bull Thistle	Cirsium vulgare	Sunflowers, Daisies, Asters, and Allies	8	Jul (past peak)
27	Creeping Thistle	Cirsium arvense	Sunflowers, Daisies, Asters, and Allies	8	Aug (peak)
28	Western Harebell	Campanula petiolata	bellflower family	8	Jul (past peak)
29	Chicory	Cichorium intybus	Sunflowers, Daisies, Asters, and Allies	7	Jul (past peak)
30	White Sweetclover	Melilotus albus	Legumes	7	Aug (peak)
31	Great Mullein	Verbascum thapsus	figwort family	7	Jul (past peak)
32	Ghost Pipe	Monotropa uniflora	heath family	6	Aug (peak)
33	Threeleaf Foamflower	Tiarella trifoliata	saxifrage family	6	Jul (past peak)
34	Firewheel	Gaillardia pulchella	Sunflowers, Daisies, Asters, and Allies	6	Aug (peak)
35	Common St. John's Wort	Hypericum perforatum	St. John's wort family	6	Jul (past peak)
36	Common Soapwort	Saponaria officinalis	pink family	6	Aug (peak)
37	Elephant's-Head lousewort	Pedicularis groenlandica	broomrape family	6	Jul (past peak)
38	Sagebrush Mariposa Lily	Calochortus macrocarpus	lily family	6	Jun (past peak)
39	Shrubby Cinquefoil	Dasiphora fruticosa	rose family	6	Jul (past peak)
40	Sulfur Buckwheat	Eriogonum umbellatum	knotweed family	6	Jul (past peak)
41	Blue Vervain	Verbena hastata	Verbena Family	4	Aug (peak)
42	American bistort	Bistorta bistortoides	knotweed family	4	Aug (peak)
43	White Campion	Silene latifolia	pink family	4	Jul (past peak)
44	Blue Elder	Sambucus cerulea	elder family	4	Jun (past peak)
45	Spreading Dogbane	Apocynum androsaemifolium	Dogbane Family	3	Jul (past peak)
46	Common Jewelweed	Impatiens capensis	balsam family	3	Aug (peak)
47	Prickly Cucumber	Echinocystis lobata	gourd family	3	Aug (peak)
48	Red Clover	Trifolium pratense	Legumes	3	Jun (past peak)
49	Red Osier Dogwood	Cornus sericea	Dogwood family	3	Jun (past peak)
50	Alfalfa	Medicago sativa	Legumes	3	Oct (rising)