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Autumn Wildflowers
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Tallgrass Prairie Heritage Park, Spring Garden Prairie, and Ojibway Prairie Provincial Nature Reserve are the best locations for observing native wildflowers in September and October. Common fall flowers are indicated by an asterisk (*). Autumn foliage usually peaks in colour by mid October.

• Agalinus purpurea Purple Gerardia*
• Agalinus tenuifolia Slender Gerardia*
• Ambrosia artemisiifolia Common Ragweed
• Ambrosia trifida Giant Ragweed
• Amphicarpa bracteata Hog-peanut*
• Aster cordifolius Heart-leaved Aster
• Aster ericoides Heath Aster*
• Aster laevis Smooth Aster*
• Aster lateriflorus Calico Aster
• Aster novae-angliae New England Aster*
• Aster oolentangiensis Sky-blue Aster*
• Aster pilosus Hairy Aster*
• Aster praealtus Willow Aster
• Aster sagittifolius Arrow-leaved Aster*
• Aster simplex Late Aster
• Aster subulatus Annual Salt-marsh Aster
• Aster umbellatus Flat-topped Aster*
• Bidens ceruna Nodding Bur Marigold
• Bidens frondosa Beggar-ticks
• Bidens vulgata Tall Beggar-ticks
• Centaurea maculosa Spotted Knapweed
• Chelone glabra Turtlehead
• Cirsium discolor Field Thistle*
• Coreopsis tripteris Tall Coreopsis*
• Erechtites hieracifolia Fireweed
• Eupatorium altissimum Tall Thoroughwort
• Eupatorium maculatum Joe-pye Weed
• Eupatorium perfoliatum Boneset
• Gentiana andrewsii Closed Gentian*
• Gentianopsis crinita Fringed Gentian*
• Hamamelis virginiana Witch Hazel
• Helenium autumnale Common Sneezeweed*
• Helianthus divaricatus Woodland Sunflower
• Helianthus gigantea Tall Sunflower*
• Helianthus tuberosus Jerusalem Artichoke
• Hieracium scabrum Rough Hawkweed
• Lactuca biennis Tall Blue Lettuce
• Lespedeza hirta Hairy Bush-clover
• Lespedeza intermedia Wand-like Bush-clover
• Lespedeza virginica Slender Bush-clover
• Liatris aspera Rough Blazing Star
• Linum sulcatum Grooved Yellow Flax
• Lycopus uniflorus Northern Water-horehound
• Prenanthes alba White Lettuce
• Prenanthes racemosa Glaucous White Lettuce*
• Ratibida pinnata Grey-headed Coneflower
• Solidago bicolor White Goldenrod
• Solidago canadensis Canada Goldenrod*
• Solidago gigantea Late Goldenrod
• Solidago nemoralis Gray Goldenrod*
• Solidago riddellii Riddell's Goldenrod
• Solidago rigida Hard-leaved Goldenrod*
• Solidago rugosa Wrinkle-leaved Goldenrod*
• Solidago sempervirens Seaside Goldenrod
• Spiranthes cernua Nodding Ladies'Tresses
• Spiranthes magnicamporum Great Plains Ladies' Tresses
• Vernonia missourica Tall Ironweed*

• Andropogon gerardii Big Bluestem
• Cenchrus longispinus Sandbur
• Danthonia spicata Poverty Grass
• Elymus canadensis Wild Rye
• Hystrix patula Bottlebrush Grass
• Panicum virgatum Switchgrass
• Phragmites autralis Reed
• Schizachyrium scoparium Little Bluestem
• Spartina pectinata Prairie Cord Grass