Explore / Bloom time / Summer
Bloom time
Summer
Species USDA tags as summer-flowering — early, mid, late, or generally "summer".
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Showing 251–300 of 617.
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Gentiana andrewsii Griseb. GEANclosed bottle gentian · Gentianaceae -
Gentiana calycosa Griseb. GECARainier pleated gentian · Gentianaceae -
Gentiana clausa Raf. GECLbottle gentian · Gentianaceae -
Geranium erianthum DC. GEER2woolly geranium · Geraniaceae -
Geum rossii (R. Br.) Ser. var. turbinatum (Rydb.) C.L. Hitchc. GEROTRoss' avens · Rosaceae -
Geum triflorum Pursh GETRold man's whiskers · Rosaceae -
Gleditsia aquatica Marshall GLAQwater locust · Fabaceae -
Glyceria obtusa (Muhl.) Trin. GLOBAtlantic mannagrass · Poaceae -
Glyceria striata (Lam.) Hitchc. GLSTfowl mannagrass · Poaceae -
Glycine max (L.) Merr. GLMA4soybean · Fabaceae -
Gordonia lasianthus (L.) Ellis GOLAloblolly bay · Theaceae -
Grevillea robusta A. Cunn. ex R. Br. GRROsilkoak · Proteaceae -
Gutierrezia sarothrae (Pursh) Britton & Rusby GUSA2broom snakeweed · Asteraceae -
Gymnocladus dioicus (L.) K. Koch GYDIKentucky coffeetree · Fabaceae -
Hedysarum alpinum L. HEALalpine sweetvetch · Fabaceae -
Helenium flexuosum Raf. HEFLpurplehead sneezeweed · Asteraceae -
Helianthus angustifolius L. HEAN2swamp sunflower · Asteraceae -
Helianthus annuus L. HEAN3common sunflower · Asteraceae -
Helianthus debilis Nutt. HEDE4cucumberleaf sunflower · Asteraceae -
Helianthus grosseserratus M. Martens HEGR4sawtooth sunflower · Asteraceae -
Helianthus nuttallii Torr. & A. Gray HENUNuttall's sunflower · Asteraceae -
Helianthus tuberosus L. HETUJerusalem artichoke · Asteraceae -
Heracleum maximum W. Bartram HEMA80common cowparsnip · Apiaceae -
Hesperostipa comata (Trin. & Rupr.) Barkworth ssp. comata HECOC8needle and thread · Poaceae -
Heteropogon contortus (L.) P. Beauv. ex Roem. & Schult. HECO10tanglehead · Poaceae -
Heterotheca villosa (Pursh) Shinners HEVI4hairy false goldenaster · Asteraceae - Heterotheca villosa (Pursh) Shinners var. villosa HEVIVhairy false goldenaster · Asteraceae
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Hibiscus aculeatus Walter HIACcomfortroot · Malvaceae -
Hibiscus laevis All. HILA2halberdleaf rosemallow · Malvaceae -
Hibiscus moscheutos L. HIMOcrimsoneyed rosemallow · Malvaceae -
Hierochloe odorata (L.) P. Beauv. HIODsweetgrass · Poaceae -
Holcus lanatus L. HOLAcommon velvetgrass · Poaceae -
Holodiscus discolor (Pursh) Maxim. HODIoceanspray · Rosaceae - Holodiscus dumosus (Nutt. ex Hook.) A. Heller HODUrockspirea · Rosaceae
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Hordeum brachyantherum Nevski HOBR2meadow barley · Poaceae -
Hymenocallis occidentalis (Leconte) Kunth var. occidentalis HYOCOnorthern spiderlily · Liliaceae -
Hypericum anagalloides Cham. & Schltdl. HYAN2tinker's penny · Clusiaceae -
Hypericum ascyron L. HYAS80great St. Johnswort · Clusiaceae -
Hypericum boreale (Britton) E.P. Bicknell HYBO2northern St. Johnswort · Clusiaceae -
Hypericum calycinum L. HYCA10Aaron's beard · Clusiaceae -
Hypericum cistifolium Lam. HYCIroundpod St. Johnswort · Clusiaceae -
Hypericum crux-andreae (L.) Crantz HYCR3St. Peterswort · Clusiaceae -
Hypericum denticulatum Walter HYDE2coppery St. Johnswort · Clusiaceae -
Hypericum galioides Lam. HYGAbedstraw St. Johnswort · Clusiaceae -
Hypericum mutilum L. HYMUdwarf St. Johnswort · Clusiaceae -
Hypericum punctatum Lam. HYPUspotted St. Johnswort · Clusiaceae -
Iliamna rivularis (Douglas ex Hook.) Greene ILRIstreambank wild hollyhock · Malvaceae -
Indigofera hirsuta L. INHIhairy indigo · Fabaceae -
Iva frutescens L. IVFRJesuit's bark · Asteraceae -
Juncus arcticus Willd. ssp. littoralis (Engelm.) Hultén JUARLmountain rush · Juncaceae