Welcome to our newest updating webpage: "What's in Bloom?" Below, you'll find all plants of concern that will be blooming during the month of August, with their scientific name, their common name, and the beginning and end of their blooming periods.
Northeastern Illinois
Juncus alpinoarticulatus - Alpine Rush: Jun. 23 - Sept. 2
Juncus scirpoides - Round-Headed Rush: Jun. 8 - Sept. 3
Epilobium strictum - Downy Willow Herb: Jul. 20 - Sept. 3
Mitchella repens - Partridgeberry: May 28 - Sept. 5
Hypericum adpressum - Shore St. John's Wort: Jun. 21 - Sept. 5
Sparganium emersum - Green-Fruited Bur Reed: Jun. 16 - Sept. 7
Castilleja coccinea - Indian Paintbrush: Apr. 18 - Sept. 8
Lespedeza frutescens - Shrubby Lespedeza: Jul. 18 - Sept. 8
Berula erecta - Cutleaf Waterparsnip: Jun. 26 - Sept. 9
Utricularia intermedia - Flat-Leaved Bladderwort: May 27 - Sept. 10
Ammophila breviligulata - American Beach Grass: Jul. 4 - Sept. 12
Helianthus giganteus - Tall Sunflower: Jul. 20 - Sept. 12
Utricularia macrorhiza - Common Bladderwort: May 26 - Sept. 13
Hasteola suaveolens - False Indian Plantain: Jul. 31 - Sept. 14
Myosotis laxa - Bay Forget-Me-Not: May 31 - Sept. 15
Drosera intermedia - Narrow-Leaved Sundew: Jul. 10 - Sept. 15
Lespedeza leptostachya - Prairie Bush Clover: Jul. 20 - Sept. 15
Corallorhiza maculata - Spotted Coral Root: Jul. 21 - Sept. 15
Trichostema dichotomum - Blue Curls: Jul. 28 - Sept. 19
Monotropa uniflora - Indian Pipe: Jun. 21 - Sept. 20
Rhynchospora alba - White Beak Rush: Jun. 25 - Sept. 20
Veronica scutellata - Marsh Speedwell: May 23 - Sept. 23
Bartonia virginica - Screw-Stem: Jul. 16 - Sept. 23
Veronica catenata var. glandulosa - Water Speedwell: Jun. 10 - Sept. 24
Phemeranthus rugospermus - Prairie Fameflower: Jun. 15 - Sept. 24
Buchnera americana - American Bluehearts: Jun. 28 - Sept. 24
Zizania aquatica - Wild Rice: Jul. 20 - Sept. 24
Triglochin maritima - Common Bog Arrow Grass: May 25 - Sept. 25
Eleocharis olivacea - Wrinkle-Sheathed Spike Rush: Jun. 27 - Sept. 25
Scleria verticillata - Low Nutrush: Jul. 31 - Sept. 25
Woodsia obtusa - Cliff Fern: Jul. 2 - Sept. 27
Carex viridula - Green Yellow Sedge: May 4 - Sept. 28
Cakile lacustris - Lake Rocket: Jun. 8 - Sept. 30
Callitriche palustris - Common Water Starwort: May 25 - Oct. 1
Triantha glutinosa - False Asphodel: Jun. 25 - Oct. 1
Hypericum kalmianum - Kalm St. Johnswort: Jun. 19 - Oct. 3
Hypericum swinkianum - Swink's St. Johnswort: Jun. 19 - Oct. 3
Ceanothus americanus - New Jersey Tea: Jun. 7 - Oct. 9
Betula populifolia - Gray Birch: May 3 - Oct. 11
Aureolaria grandiflora var. pulchra - Yellow False Foxglove: Jul. 28 - Oct. 11
Utricularia cornuta - Horned Bladderwort: Jun. 2 - Oct. 21
Eleocharis geniculata - Knee Spikerush: Jul. 30 - Oct. 26
Chamaesyce polygonifolia - Seaside Spurge: Jul. 9 - Nov. 5
Asplenium rhizophyllum - Walking Fern: May 30 - Nov. 13
Northwestern Illinois
Pedicularis lanceolata - Fen Betony: Jun. 14 - Sept. 22
Callirhoe triangulata - Clustered Poppymallow: Jun. 24 - Sept. 29
Spiranthes romanzoffiana - Hooded Lady's Tresses: Jun. 1 - Sept. 30
Polygonella articulata - Coastal Jointweed: Jul. 25 - Oct. 6
Eurybia schreberi - Schreber's Aster: Jul. 27 - Oct. 26
Southern Illinois
Calamagrostis insperata - Hollow Reed Grass: Jun. 1 - Sept. 1
Dichanthelium yadkinense - Panic Grass: May 1 - Sept. 30
Carex gigantea - Giant Sedge: May 1 - Sept. 30
Hydrolea uniflora - One-flowered Hydrolea: Jun. 1 - Sept. 30
Hexalectris spicata - Crested Coralroot Orchid: Jun. 1 - Sept. 30
Campanula rotundifolia - Harebell: Jun. 1 - Sept. 30
Oxalis illinoensis - Illinois Woodsorrel: Jun. 1 - Sept. 30
Bergia texana - Texas Bergia: Jun. 1 - Sept. 30
Scleria oligantha - Littlehead Nutrush: Jun. 1 - Sept. 30
Phemeranthus calycinus - Large-flowered Fameflower: Jun. 1 - Sept. 30
Scirpus polyphyllus - Leafy Bulrush: Jul. 1 - Sept. 30
Actaea rubifolia - Appalachian Bugbane: Jul. 1 - Sept. 30
Tragia cordata - Noseburn: Jul. 1 - Sept. 30
Sagittaria australis - Longbeak Arrowhead: Jul. 1 - Sept. 30
Ptilimnium costatum - Ribbed Mock Bishopweed: Jul. 1 - Sept. 30
Bartonia paniculata - Screwstem: Aug. 1 - Sept. 30
Melothria pendula - Squirting Cucumber: Jun. 1 - Oct. 01
Hylotelephium telephioides - Wild Orpine: Aug. 1 - Oct. 01
Brasenia schreberi - Watershield: May 1 - Oct. 30
Melanthera nivea - Snow Squarestem: Jun. 1 - Oct. 31
Heteranthera missouriensis - Mudplantain: Jun. 1 - Oct. 31
Dichanthelium ravenelii - Ravenel's Rosette Grass: Jun. 1 - Oct. 31
Persicaria bicornis - Long-styled Smartweed: Jul. 1 - Oct. 31
Rhynchospora glomerata - Clustered Beak Rush: Jul. 1 - Oct. 31
Helianthus angustifolius - Narrow-leaved Sunflower: Aug. 1 - Oct. 31
Gentiana saponaria - Harvestbell: Aug. 1 - Oct. 31
Iresine rhizomatosa - Juda's Bush: Aug. 1 - Oct. 31
Dicliptera brachiata - Branched Foldwing: Aug. 1 - Oct. 31
Fleischmannia incarnata - Pink Thoroughwort: Aug. 1 - Oct. 31
Eupatorium torreyanu - Torrey's Thoroughwort: Aug. 1 - Nov. 1
Eryngium prostratum - Eryngo: May 1 - Nov. 30