Native plants for Williamson County, Illinois
832 native plants recorded in Williamson County, Illinois
The USDA plant database has 1,210 plants recorded growing wild in Williamson County. 832 of them are native to the lower 48, and 150 are introduced species that this page leaves out.
By type: 476 wildflowers and herbs, 156 grasses and sedges, 22 shrubs, 40 low woody plants, 98 trees, 40 vines. USDA has rated sun, soil and water needs for 331 of them (40%), and only those can be matched to a spot below. Annual ragweed (Ambrosia artemisiifolia), Bride's feathers (Aruncus dioicus) and 18 more are also recorded as introduced.
What fits each kind of spot in Williamson County
| Spot | Rated to fit | Rated not to | Unrated |
|---|---|---|---|
| Sun all day | 331 | 0 | 501 |
| Half shade | 231 | 100 | 501 |
| Under trees | 126 | 205 | 501 |
| Heavy clay | 236 | 95 | 501 |
| Sandy, drains fast | 213 | 118 | 501 |
| Never watered | 136 | 195 | 501 |
| Stays soggy | 162 | 169 | 501 |
Sun all day in Williamson County: 331 rated natives
124 wildflowers and herbs, 83 grasses and sedges, 82 trees, 17 vines, 13 shrubs, 12 low woody plants. The first 8, ranked by how easy a start they make:
- American water-willow (Justicia americana) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 2.5 ft mature · rapid growth · perennial - Blackeyed Susan (Rudbeckia hirta) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 1 ft mature · rapid growth · perennial - Bristly buttercup (Ranunculus hispidus) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 2.5 ft mature · rapid growth · perennial - Bulbous bittercress (Cardamine bulbosa) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 1.4 ft mature · rapid growth · perennial - Carolina elephantsfoot (Elephantopus carolinianus) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 2.7 ft mature · rapid growth · perennial - Climbing dayflower (Commelina diffusa) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 1 ft mature · rapid growth · perennial - Closed bottle gentian (Gentiana andrewsii) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 2 ft mature · moderate growth · perennial - Common blue violet (Viola sororia) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 0.3 ft mature · moderate growth · perennial
Half shade in Williamson County: 231 rated natives
85 wildflowers and herbs, 61 grasses and sedges, 58 trees, 10 low woody plants, 9 shrubs, 8 vines. The first 8, ranked by how easy a start they make:
- Blackeyed Susan (Rudbeckia hirta) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 1 ft mature · rapid growth · perennial · high shade tolerance - Carolina elephantsfoot (Elephantopus carolinianus) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 2.7 ft mature · rapid growth · perennial · high shade tolerance - Eastern purple coneflower (Echinacea purpurea) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 1.2 ft mature · moderate growth · perennial · high shade tolerance - Gray goldenrod (Solidago nemoralis) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 2 ft mature · rapid growth · perennial · high shade tolerance - Hairy false goldenaster (Heterotheca villosa) low woody plants
USDA growing data on file · conspicuous flowers · photo available · about 3 ft mature · moderate growth · perennial · high shade tolerance - Illinois bundleflower (Desmanthus illinoensis) low woody plants
USDA growing data on file · conspicuous flowers · photo available · about 3 ft mature · moderate growth · perennial · high shade tolerance - Prairie fleabane (Erigeron strigosus) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 3 ft mature · moderate growth · perennial · high shade tolerance - Spreading yellowcress (Rorippa sinuata) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 1 ft mature · moderate growth · perennial · high shade tolerance
Under trees in Williamson County: 126 rated natives
39 wildflowers and herbs, 38 grasses and sedges, 37 trees, 5 low woody plants, 4 shrubs, 3 vines. The first 8, ranked by how easy a start they make:
- Blackeyed Susan (Rudbeckia hirta) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 1 ft mature · rapid growth · perennial - Carolina elephantsfoot (Elephantopus carolinianus) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 2.7 ft mature · rapid growth · perennial - Eastern purple coneflower (Echinacea purpurea) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 1.2 ft mature · moderate growth · perennial - Gray goldenrod (Solidago nemoralis) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 2 ft mature · rapid growth · perennial - Hairy false goldenaster (Heterotheca villosa) low woody plants
USDA growing data on file · conspicuous flowers · photo available · about 3 ft mature · moderate growth · perennial - Illinois bundleflower (Desmanthus illinoensis) low woody plants
USDA growing data on file · conspicuous flowers · photo available · about 3 ft mature · moderate growth · perennial - Prairie fleabane (Erigeron strigosus) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 3 ft mature · moderate growth · perennial - Spreading yellowcress (Rorippa sinuata) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 1 ft mature · moderate growth · perennial
Heavy clay in Williamson County: 236 rated natives
94 wildflowers and herbs, 65 grasses and sedges, 50 trees, 10 vines, 9 shrubs, 8 low woody plants. The first 8, ranked by how easy a start they make:
- American water-willow (Justicia americana) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 2.5 ft mature · rapid growth · perennial - Carolina elephantsfoot (Elephantopus carolinianus) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 2.7 ft mature · rapid growth · perennial - Common selfheal (Prunella vulgaris) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 1.5 ft mature · rapid growth · perennial - Eastern purple coneflower (Echinacea purpurea) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 1.2 ft mature · moderate growth · perennial - Fringeleaf wild petunia (Ruellia humilis) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 2.6 ft mature · moderate growth · perennial - Groundnut (Apios americana) vines
USDA growing data on file · conspicuous flowers · photo available · about 1 ft mature · rapid growth · perennial - Heartleaf peppervine (Ampelopsis cordata) vines
USDA growing data on file · conspicuous flowers · photo available · about 2 ft mature · moderate growth · perennial - Illinois bundleflower (Desmanthus illinoensis) low woody plants
USDA growing data on file · conspicuous flowers · photo available · about 3 ft mature · moderate growth · perennial
Sandy, drains fast in Williamson County: 213 rated natives
68 wildflowers and herbs, 65 trees, 52 grasses and sedges, 12 vines, 9 shrubs, 7 low woody plants. The first 8, ranked by how easy a start they make:
- American water-willow (Justicia americana) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 2.5 ft mature · rapid growth · perennial - Carolina elephantsfoot (Elephantopus carolinianus) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 2.7 ft mature · rapid growth · perennial - Common selfheal (Prunella vulgaris) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 1.5 ft mature · rapid growth · perennial - Eastern purple coneflower (Echinacea purpurea) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 1.2 ft mature · moderate growth · perennial - Fringeleaf wild petunia (Ruellia humilis) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 2.6 ft mature · moderate growth · perennial - Gray goldenrod (Solidago nemoralis) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 2 ft mature · rapid growth · perennial - Groundnut (Apios americana) vines
USDA growing data on file · conspicuous flowers · photo available · about 1 ft mature · rapid growth · perennial - Hairy false goldenaster (Heterotheca villosa) low woody plants
USDA growing data on file · conspicuous flowers · photo available · about 3 ft mature · moderate growth · perennial
Never watered in Williamson County: 136 rated natives
44 trees, 41 wildflowers and herbs, 24 grasses and sedges, 10 low woody plants, 9 shrubs, 8 vines. The first 8, ranked by how easy a start they make:
- Missouri goldenrod (Solidago missouriensis) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 3 ft mature · moderate growth · perennial · high drought tolerance - Trumpet creeper (Campsis radicans) vines
USDA growing data on file · conspicuous flowers · photo available · about 2 ft mature · rapid growth · perennial · high drought tolerance - Allegheny blackberry (Rubus allegheniensis) low woody plants
USDA growing data on file · conspicuous flowers · photo available · about 6 ft mature · rapid growth · perennial · high drought tolerance - Carolina rose (Rosa carolina) low woody plants
USDA growing data on file · conspicuous flowers · photo available · about 5 ft mature · moderate growth · perennial · high drought tolerance - Foxglove beardtongue (Penstemon digitalis) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 4 ft mature · moderate growth · perennial · high drought tolerance - Blackeyed Susan (Rudbeckia hirta) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 1 ft mature · rapid growth · perennial - Carolina elephantsfoot (Elephantopus carolinianus) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 2.7 ft mature · rapid growth · perennial - Closed bottle gentian (Gentiana andrewsii) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 2 ft mature · moderate growth · perennial
Stays soggy in Williamson County: 162 rated natives
63 wildflowers and herbs, 58 grasses and sedges, 28 trees, 6 shrubs, 4 vines, 3 low woody plants. The first 8, ranked by how easy a start they make:
- American lotus (Nelumbo lutea) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 3 ft mature · moderate growth · perennial · takes saturated soil - American water plantain (Alisma subcordatum) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 0.5 ft mature · moderate growth · perennial · takes saturated soil - American water-willow (Justicia americana) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 2.5 ft mature · rapid growth · perennial · takes saturated soil - Bluntleaf bedstraw (Galium obtusum) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 1.5 ft mature · moderate growth · perennial · takes saturated soil - Groundnut (Apios americana) vines
USDA growing data on file · conspicuous flowers · photo available · about 1 ft mature · rapid growth · perennial · takes saturated soil - Nodding lady's tresses (Spiranthes cernua) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 1.5 ft mature · moderate growth · perennial · takes saturated soil - Sharpwing monkeyflower (Mimulus alatus) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 2.3 ft mature · rapid growth · perennial · takes saturated soil - Smooth phlox (Phlox glaberrima) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 3 ft mature · moderate growth · perennial · takes saturated soil
Natives Williamson County has that most of Illinois does not
20 natives here are on file in no more than 5 of Illinois's 102 counties. A few of them:
- Virginia pine (Pinus virginiana): only here
- Spleenwort (Asplenium ×shawneense): only here
- Sourgrass (Digitaria insularis): only here
- Redseed plantain (Plantago rhodosperma): only here
- Upland blackberry (Rubus pergratus): only here
- Spleenwort (Asplenium ×gravesii): 2 counties
- Guyandotte beauty (Synandra hispidula): 2 counties
- Velvet panicum (Dichanthelium scoparium): 3 counties
- Oldfield blackberry (Rubus alumnus): 3 counties
- Creeping eryngo (Eryngium prostratum): 3 counties
Where to start in Williamson County
If you have only one spot to fill, sun all day is where Williamson County gives you the most rated choice (331 plants), and American water-willow (Justicia americana) is the easiest start on that list. Under trees is the hard one here: 126 rated plants, so for that spot it is worth asking a local native-plant society about the 501 unrated natives too.