Explore / Bloom time / Summer
Bloom time
Summer
Species USDA tags as summer-flowering — early, mid, late, or generally "summer".
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Showing 451–500 of 617.
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Polygonum davisiae W.H. Brewer ex A. Gray PODADavis' knotweed · Polygonaceae -
Polygonum punctatum Elliott POPU5dotted smartweed · Polygonaceae -
Potamogeton amplifolius Tuck. POAM5largeleaf pondweed · Potamogetonaceae -
Potamogeton epihydrus Raf. POEP2ribbonleaf pondweed · Potamogetonaceae -
Potamogeton natans L. PONA4floating pondweed · Potamogetonaceae -
Potamogeton nodosus Poir. PONO2longleaf pondweed · Potamogetonaceae -
Potamogeton robbinsii Oakes PORO2Robbins' pondweed · Potamogetonaceae -
Potamogeton zosteriformis Fernald POZOflatstem pondweed · Potamogetonaceae -
Potentilla gracilis Douglas ex Hook. POGR9slender cinquefoil · Rosaceae -
Prunella vulgaris L. PRVUcommon selfheal · Lamiaceae -
Pseudoroegneria spicata (Pursh) Á. Löve ssp. spicata PSSPSbluebunch wheatgrass · Poaceae -
Ptelea trifoliata L. PTTRcommon hoptree · Rutaceae -
Pteridium aquilinum (L.) Kuhn PTAQwestern brackenfern · Dennstaedtiaceae -
Ptilagrostis kingii (Bol.) Barkworth PTKISierra false needlegrass · Poaceae -
Ranunculus eschscholtzii Schltdl. RAESEschscholtz's buttercup · Ranunculaceae -
Ranunculus flammula L. RAFL2greater creeping spearwort · Ranunculaceae -
Ranunculus hyperboreus Rottb. RAHY2high northern buttercup · Ranunculaceae -
Ranunculus macounii Britton RAMA2Macoun's buttercup · Ranunculaceae -
Ranunculus pensylvanicus L. f. RAPE2Pennsylvania buttercup · Ranunculaceae -
Ratibida columnifera (Nutt.) Wooton & Standl. RACO3upright prairie coneflower · Asteraceae -
Ratibida tagetes (James) Barnhart RATAgreen prairie coneflower · Asteraceae -
Rhododendron albiflorum Hook. RHAL2Cascade azalea · Ericaceae -
Ribes cereum Douglas RICEwax currant · Grossulariaceae -
Ribes montigenum McClatchie RIMO2gooseberry currant · Grossulariaceae -
Rosa acicularis Lindl. ROACprickly rose · Rosaceae -
Rosa californica Cham. & Schltdl. ROCA2California wildrose · Rosaceae -
Rosa carolina L. ROCA4Carolina rose · Rosaceae -
Rosa pisocarpa A. Gray ROPI2cluster rose · Rosaceae -
Rosa rubiginosa L. RORU82sweetbriar rose · Rosaceae -
Rubus arcticus L. RUARarctic raspberry · Rosaceae -
Rubus idaeus L. ssp. strigosus (Michx.) Focke RUIDS2grayleaf red raspberry · Rosaceae -
Rubus laciniatus Willd. RULAcutleaf blackberry · Rosaceae -
Rudbeckia hirta L. RUHI2blackeyed Susan · Asteraceae -
Rudbeckia laciniata L. RULA3cutleaf coneflower · Asteraceae -
Rudbeckia maxima Nutt. RUMA3great coneflower · Asteraceae -
Ruellia humilis Nutt. RUHUfringeleaf wild petunia · Acanthaceae -
Rumex arcticus Trautv. RUAR6arctic dock · Polygonaceae -
Sabal causiarum (O.F. Cook) Becc. SACAPuerto Rico palmetto · Arecaceae -
Sabal palmetto (Walter) Lodd. ex Schult. & Schult. f. SAPAcabbage palmetto · Arecaceae -
Saccharum giganteum (Walter) Pers. SAGIsugarcane plumegrass · Poaceae -
Saccharum ravennae (L.) L. SARA3ravennagrass · Poaceae -
Sacciolepis striata (L.) Nash SASTAmerican cupscale · Poaceae -
Sagittaria platyphylla (Engelm.) J.G. Sm. SAPLdelta arrowhead · Alismataceae -
Salicornia rubra A. Nelson SARUred swampfire · Chenopodiaceae -
Salix fuscescens Andersson SAFUAlaska bog willow · Salicaceae -
Salix glauca L. SAGLgrayleaf willow · Salicaceae -
Salix hastata L. SAHAhalberd willow · Salicaceae -
Salix pentandra L. SAPE4laurel willow · Salicaceae -
Salix reticulata L. SARE2netleaf willow · Salicaceae -
Salix richardsonii Hook. SARI4Richardson's willow · Salicaceae