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 October, with their scientific name, their common name, and the beginning and end of their blooming periods.
Northeastern Illinois
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
Symphyotrichum boreale - Rush Aster: Aug. 7 - Oct. 4
Spiranthes magnicamporum - Great Plains Ladies' Tresses: Aug. 31 - Oct. 5
Ceanothus americanus - New Jersey Tea: Jun. 7 - Oct. 9
Parnassia glauca - Grass of Parnassus: Aug. 12 - Oct. 9
Betula populifolia - Gray Birch: May 3 - Oct. 11
Aureolaria grandiflora var. pulchra - Yellow False Foxglove: Jul. 28 - Oct. 11
Gentiana puberulenta - Downy Gentian: Aug. 26 - Oct. 13
Lycopodium complanatum var. flabelliforme - Trailing Ground Pine: Aug. 26 - Oct. 14
Utricularia cornuta - Horned Bladderwort: Jun. 2 - Oct. 21
Eleocharis geniculata - Knee Spikerush: Jul. 30 - Oct. 26
Chamaesyce polygonifolia - Seaside Spurge: Jul. 9 - Nov. 5
Spiranthes ovalis var. erostellata - October Lady's Tresses: Sept. 23 - Nov. 6
Asplenium rhizophyllum - Walking Fern: May 30 - Nov. 13
Gentianopsis crinita - Fringed Gentian: Sept. 3 - Nov. 14
Lycopodium obscurum - Ground Pine: Sept. 26 - Nov. 17
Northwestern Illinois
Polygonella articulata - Coastal Jointweed: Jul. 25 - Oct. 6
Symphyotrichum prenanthoides - Crookedstem Aster: Aug. 23 - Oct. 12
Dryopteris goldiana - Goldie's Fern: Aug. 27 - Oct. 18
Eurybia schreberi - Schreber's Aster: Jul. 27 - Oct. 26
Southern Illinois
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 - Harvestbells: 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