Jerusalem Artichoke (Helianthus tuberosus L.)

Asteraceae/Compositae (Aster/Composit Family) Synonym(s): Jerusalem Artichoke, Sunchoke Bloom Color: YellowBloom Time: Aug , Sep , Oct For more information about this plant, Click Here.

Whorled Rosinweed (Silphium trifoliatum L. var. latifolium A. Gray)

Asteraceae/Compositae (Aster/Composit Family) Bloom Color: YellowBloom Time: Jun , Jul , Aug , Sep , Oct For more information about this plant, Click Here. Similar Species: Whorled Rosinweed (Silphium trifoliatum L. var. trifoliatum)

Yellow Flower Leafcup (Smallanthus uvedalius (L.) Mack. ex Small)

Asteraceae/Compositae (Aster/Composit Family) Synonym(s): Bears Foot; Hairy Leafcup Bloom Color: YellowBloom Time: Jun , Jul , Aug , Sep , Oct For more information about this plant, Click Here.

Horseweed (Conyza canadensis (L.) Cronquist)

Asteraceae/Compositae (Aster/Composit Family) Synonym(s):¬†Horseweed, Canadian Horseweed, Bitterweed, Hogweed, Squaw Weed, Colt’s Tail Bloom Color: WhiteBloom Time: Jul , Aug , Sep , Oct , NovNotes: The leaves have a sharp flavor and an aromatic taste similar to tarragon. For more information about this plant, Click Here.

Prairie Tea (Croton monanthogynus Michx.)

Euphorbiaceae (Spurge Family) Synonym(s): Prairie Tea, One-seed Croton, Doveweed, Dove Weed, Prairie Goatweed Bloom Color: White , GreenBloom Time: Mar , Apr , May , Jun , Jul , Aug , Sep , Oct , Nov For more information about this plant, Click Here and Here.

Common Evening Primrose (Oenothera biennis L.)

Onagraceae (Evening Primrose Family) Synonym(s): Common Evening-primrose, King’s Cure-all Bloom Color: YellowBloom Time: Jul , Aug , SepNotes: The flowers of this night-flowering biennial open in the evening and close by noon. For more information about this plant, Click Here.

Canada Goldenrod (Solidago canadensis L.)

Asteraceae/Compositae (Aster/Composit Family) Synonym(s): Canada Goldenrod, Canadian Goldenrod, Tall Goldenrod, Giant Goldenrod Bloom Color: YellowBloom Time: Sep , Oct , NovNotes: Although it and other Goldenrods are commonly blamed for hay fever, this discomfort is usually caused by pollen from Ragweed (Ambrosia spp.) that blooms at the same time. For more information about this plant, ClickContinue reading “Canada Goldenrod (Solidago canadensis L.)”

Late-Flowering Thoroughwort (Eupatorium serotinum)

Asteraceae/Compositae (Aster/Composit Family) Synonym(s):  White Boneset, Late Boneset, Late-flowering Boneset Bloom Color: WhiteBloom Time: Sep , Oct , NovQuiz: See if you can find the Lynx Spider (Peucetia viridans)! For more information about this plant, Click Here.

Common Sneezeweed (Helenium autumnale L.)

Asteraceae/Compositae (Aster/Composit Family) Synonym(s):  Fall Sneezeweed, Autumn Sneezeweed Bloom Color: YellowBloom Time: Jul , Aug , Sep , OctNotes: The genus is thought to have been named by Linnaeus for Helen of Troy. The legend is that the flowers sprung up from the ground where her tears fell. For more information about this plant, ClickContinue reading “Common Sneezeweed (Helenium autumnale L.)”

Virgin’s Bower (Clematis virginiana L.)

Ranunculaceae (Buttercup Family) Synonym(s): Devil’s Darning Needles, Virgin’s Bower, Old Man’s Beard Bloom Color: White , Green , BrownBloom Time: Jul , Aug , Sep For more information about this plant, Click Here.

Slender Dayflower (Commelina erecta L. var. erecta)

Commelinaceae (Spiderwort Family) Synonyms: Dayflower, Widow’s Tears, White-mouth Dayflower Bloom Color: BlueBloom Time: Jul , Aug , SepNotes: They only bloom for a day, but there are several buds on a plant that open 3-4 days apart. For more information about this plant, Click Here. Similar Species: Asiatic Dayflower (Commelina communis L.)

Brown-Eyed Susan (Rudbeckia triloba L)

Asteraceae/Compositae (Aster/Composit Family) Bloom Color: YellowBloom Time: Jun , Jul , Aug , Sep , OctBloom Notes: More numerous flowers than R. hirta, (Black-Eyed Susan) with shorter and fewer petals. For more information about this plant, Click Here. Similar Species: Black-Eyed Susan (Rudbeckia hirta L.)