Chicago Botanic Garden

What's in Bloom

What's in Bloom at the Chicago Botanic Garden

Natural Areas — October 20, 2014

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Oaks in fall color
(Quercus sp.)

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Asters
(Symphyotrichum sp.)

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Poison ivy
(Rhus radicans)

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Late boneset
(Eupatorium serotinum)

McDonald Woods: Fall color is peaking in the woods. Common witchhazel (Hamamelis virginiana), white lettuce (Prenanthes alba), blue-stemmed goldenrod (Solidago caesia), zig-zag goldenrod (Solidago flexicaulis), Drummond's aster (Symphyotrichum drummondii), side-flowering aster (Symphyotrichum lateriflorum), New England aster (Symphyotrichum novae-angliae), hairy aster (Symphyotrichum pilosum), willow aster (Symphyotrichum praealtum), arrowed leaved aster (Symphyotrichum sagittifolium), Short's aster (Symphyotrichum shortii). Fall color: American hornbeam (Carpinus caroliniana) –foliage, shagbark hickory (Carya ovata) -foliage, gray dogwood (Cornus racemosa) -foliage, red-osier dogwood (Cornus stolonifera) -foliage, common witch hazel (Hamamelis virginiana) -foliage, Virginia creeper (Parthenocissus quinquefolia) -foliage, pokeweed (Phytolacca americana) –purple fruit, oak sp. (Quercus sp.) –foliage and acorns, poison ivy (Rhus radicans) –foliage, staghorn sumac (Rhus typhina) –foliage, Indian currant (Symphoricarpos orbiculatus) –fruit, nannyberry viburnum (Viburnum lentago) -foliage, blackhaw viburnum (Viburnum prunifolium) –foliage.

Prairie and Skokie River: Signs of autumn on the prairie are tall grasses with seed heads shining in the sun and the yellows, blues and whites of late blooming forbs. Big bluestem (Andropogon gerardii), bluejoint reed grass (Calamagrostis canadensis), prairie cordgrass (Spartina pectinata), nodding wild rye (Elymus canadensis), tall bonset (Eupatorium altissimum), late boneset (Eupatorium serotinum), saw toothed sunflower (Helianthus grosseserratus), false boneset (Kuhnia eupatorioides var. corymbulosa), switch grass (Panicum virgatum), white upland aster (Solidago ptarmicoides), Indian grass (Sorghastrum nutans), prairie cordgrass (Spartina pectinata), heath aster (Symphyotrichum ericoides), smooth blue aster (Symphyotrichum laeve), New England aster (Symphyotrichum novae-angliae), hairy aster (Symphyotrichum pilosum), willow aster (Symphyotrichum prealtum), swamp aster (Symphyotrichum puniceum var. puniceum), silky aster (Symphyotrichum sericeum), flat-topped aster (Symphyotrichum undulatum).