Native plants for St. Clair County, Illinois
1,115 native plants recorded in St. Clair County, Illinois
The USDA plant database has 1,648 plants recorded growing wild in St. Clair County. 1,115 of them are native to the lower 48, and 221 are introduced species that this page leaves out.
By type: 665 wildflowers and herbs, 211 grasses and sedges, 27 shrubs, 50 low woody plants, 107 trees, 55 vines. USDA has rated sun, soil and water needs for 384 of them (34%), and only those can be matched to a spot below. Annual ragweed (Ambrosia artemisiifolia), Biennial wormwood (Artemisia biennis) and 24 more are also recorded as introduced.
What fits each kind of spot in St. Clair County
| Spot | Rated to fit | Rated not to | Unrated |
|---|---|---|---|
| Sun all day | 384 | 0 | 731 |
| Half shade | 268 | 116 | 731 |
| Under trees | 146 | 238 | 731 |
| Heavy clay | 284 | 100 | 731 |
| Sandy, drains fast | 232 | 152 | 731 |
| Never watered | 144 | 240 | 731 |
| Stays soggy | 201 | 183 | 731 |
Sun all day in St. Clair County: 384 rated natives
144 wildflowers and herbs, 111 grasses and sedges, 85 trees, 16 vines, 15 shrubs, 13 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 - Atlantic camas (Camassia scilloides) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 2.5 ft mature · moderate 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 - Bristly dewberry (Rubus hispidus) low woody plants
USDA growing data on file · conspicuous flowers · photo available · about 2 ft mature · moderate growth · perennial - Canadian lousewort (Pedicularis canadensis) low woody plants
USDA growing data on file · conspicuous flowers · photo available · about 1.3 ft mature · moderate 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
Half shade in St. Clair County: 268 rated natives
102 wildflowers and herbs, 78 grasses and sedges, 58 trees, 11 shrubs, 10 low woody plants, 9 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 - Bristly dewberry (Rubus hispidus) low woody plants
USDA growing data on file · conspicuous flowers · photo available · about 2 ft mature · moderate 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 - Lanceleaf tickseed (Coreopsis lanceolata) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 2 ft mature · moderate growth · perennial · high shade tolerance
Under trees in St. Clair County: 146 rated natives
48 grasses and sedges, 46 wildflowers and herbs, 37 trees, 7 low woody plants, 4 vines, 4 shrubs. 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 - Bristly dewberry (Rubus hispidus) low woody plants
USDA growing data on file · conspicuous flowers · photo available · about 2 ft mature · moderate 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 - Lanceleaf tickseed (Coreopsis lanceolata) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 2 ft mature · moderate growth · perennial
Heavy clay in St. Clair County: 284 rated natives
109 wildflowers and herbs, 91 grasses and sedges, 55 trees, 10 vines, 10 shrubs, 9 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 - Bristly dewberry (Rubus hispidus) low woody plants
USDA growing data on file · conspicuous flowers · photo available · about 2 ft mature · moderate 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
Sandy, drains fast in St. Clair County: 232 rated natives
81 wildflowers and herbs, 63 trees, 58 grasses and sedges, 12 vines, 11 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 - Bristly dewberry (Rubus hispidus) low woody plants
USDA growing data on file · conspicuous flowers · photo available · about 2 ft mature · moderate 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
Never watered in St. Clair County: 144 rated natives
44 trees, 42 wildflowers and herbs, 31 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 - Missouri gourd (Cucurbita foetidissima) vines
USDA growing data on file · conspicuous flowers · photo available · about 1 ft mature · rapid 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 - Leadplant (Amorpha canescens) shrubs
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
Stays soggy in St. Clair County: 201 rated natives
81 grasses and sedges, 76 wildflowers and herbs, 31 trees, 7 shrubs, 3 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 - Cursed buttercup (Ranunculus sceleratus) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 2 ft mature · rapid 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 - Marsh hedgenettle (Stachys palustris) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 3 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
Natives St. Clair County has that most of Illinois does not
44 natives here are on file in no more than 5 of Illinois's 102 counties. A few of them:
- Smallfruit agrimony (Agrimonia microcarpa): only here
- Carolina mosquitofern (Azolla caroliniana): only here
- Texas bergia (Bergia texana): only here
- Fireberry hawthorn (Crataegus chrysocarpa): only here
- Clinton's woodfern (Dryopteris clintoniana): only here
- Mexican lovegrass (Eragrostis mexicana): only here
- Texas snakeweed (Gutierrezia texana): only here
- Texas blueweed (Helianthus ciliaris): only here
- Appalachian quillwort (Isoetes engelmannii): only here
- Bigfruit evening primrose (Oenothera macrocarpa): only here
Where to start in St. Clair County
If you have only one spot to fill, sun all day is where St. Clair County gives you the most rated choice (384 plants), and American water-willow (Justicia americana) is the easiest start on that list. Never watered is the hard one here: 144 rated plants, so for that spot it is worth asking a local native-plant society about the 731 unrated natives too.