Native plants for Mercer County, Illinois
431 native plants recorded in Mercer County, Illinois
The USDA plant database has 642 plants recorded growing wild in Mercer County. 431 of them are native to the lower 48, and 74 are introduced species that this page leaves out.
By type: 257 wildflowers and herbs, 72 grasses and sedges, 14 shrubs, 24 low woody plants, 44 trees, 20 vines. USDA has rated sun, soil and water needs for 173 of them (40%), and only those can be matched to a spot below. Annual ragweed (Ambrosia artemisiifolia), Common dandelion (Taraxacum officinale) and 13 more are also recorded as introduced.
What fits each kind of spot in Mercer County
| Spot | Rated to fit | Rated not to | Unrated |
|---|---|---|---|
| Sun all day | 173 | 0 | 258 |
| Half shade | 125 | 48 | 258 |
| Under trees | 70 | 103 | 258 |
| Heavy clay | 121 | 52 | 258 |
| Sandy, drains fast | 112 | 61 | 258 |
| Never watered | 84 | 89 | 258 |
| Stays soggy | 77 | 96 | 258 |
Sun all day in Mercer County: 173 rated natives
74 wildflowers and herbs, 40 grasses and sedges, 39 trees, 8 vines, 7 shrubs, 5 low woody plants. The first 8, ranked by how easy a start they make:
- 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 - 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 - Common selfheal (Prunella vulgaris) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 1.5 ft mature · rapid growth · perennial - Downy yellow violet (Viola pubescens) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 1.3 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
Half shade in Mercer County: 125 rated natives
54 wildflowers and herbs, 31 trees, 27 grasses and sedges, 5 vines, 4 low woody plants, 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 · 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 - Pale purple coneflower (Echinacea pallida) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 1.2 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 - Purple poppymallow (Callirhoe involucrata) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 1 ft mature · moderate growth · perennial · high shade tolerance - Trumpet creeper (Campsis radicans) vines
USDA growing data on file · conspicuous flowers · photo available · about 2 ft mature · rapid growth · perennial · high shade tolerance - Canada goldenrod (Solidago canadensis) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 3.5 ft mature · rapid growth · perennial · high shade tolerance - Canadian milkvetch (Astragalus canadensis) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 0.5 ft mature · moderate growth · perennial · high shade tolerance · toxicity: slight
Under trees in Mercer County: 70 rated natives
26 wildflowers and herbs, 21 trees, 21 grasses and sedges, 1 vines, 1 low woody plants. 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 - Gray goldenrod (Solidago nemoralis) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 2 ft mature · rapid growth · perennial - Pale purple coneflower (Echinacea pallida) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 1.2 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 - Purple poppymallow (Callirhoe involucrata) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 1 ft mature · moderate growth · perennial - Trumpet creeper (Campsis radicans) vines
USDA growing data on file · conspicuous flowers · photo available · about 2 ft mature · rapid growth · perennial - Canada goldenrod (Solidago canadensis) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 3.5 ft mature · rapid growth · perennial - Canadian milkvetch (Astragalus canadensis) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 0.5 ft mature · moderate growth · perennial · toxicity: slight
Heavy clay in Mercer County: 121 rated natives
57 wildflowers and herbs, 27 trees, 27 grasses and sedges, 4 vines, 3 low woody plants, 3 shrubs. The first 8, ranked by how easy a start they make:
- Common selfheal (Prunella vulgaris) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 1.5 ft mature · rapid 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 - Marsh hedgenettle (Stachys palustris) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 3 ft mature · moderate growth · perennial - Pale purple coneflower (Echinacea pallida) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 1.2 ft mature · moderate growth · perennial - Pennsylvania bittercress (Cardamine pensylvanica) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 1.5 ft mature · rapid 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 - Spotted St. Johnswort (Hypericum punctatum) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 3 ft mature · moderate growth · perennial
Sandy, drains fast in Mercer County: 112 rated natives
42 wildflowers and herbs, 32 trees, 25 grasses and sedges, 6 vines, 4 shrubs, 3 low woody plants. The first 8, ranked by how easy a start they make:
- Common selfheal (Prunella vulgaris) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 1.5 ft mature · rapid 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 - Marsh hedgenettle (Stachys palustris) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 3 ft mature · moderate growth · perennial - Pale purple coneflower (Echinacea pallida) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 1.2 ft mature · moderate growth · perennial - Pennsylvania bittercress (Cardamine pensylvanica) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 1.5 ft mature · rapid 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
Never watered in Mercer County: 84 rated natives
29 wildflowers and herbs, 25 trees, 17 grasses and sedges, 5 vines, 5 shrubs, 3 low woody plants. The first 8, ranked by how easy a start they make:
- Trumpet creeper (Campsis radicans) vines
USDA growing data on file · conspicuous flowers · photo available · about 2 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 - 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 - Common selfheal (Prunella vulgaris) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 1.5 ft mature · rapid growth · perennial - Downy yellow violet (Viola pubescens) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 1.3 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
Stays soggy in Mercer County: 77 rated natives
34 wildflowers and herbs, 22 grasses and sedges, 14 trees, 3 vines, 2 low woody plants, 2 shrubs. The first 8, ranked by how easy a start they make:
- 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 - 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 - 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 - Tufted loosestrife (Lysimachia thyrsiflora) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 2 ft mature · moderate growth · perennial · takes saturated soil - Canada germander (Teucrium canadense) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 3.3 ft mature · moderate growth · perennial · takes saturated soil - Dotted smartweed (Polygonum punctatum) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 3.2 ft mature · moderate growth · perennial · takes saturated soil - Halberdleaf rosemallow (Hibiscus laevis) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 8 ft mature · moderate growth · perennial · takes saturated soil
Natives Mercer County has that most of Illinois does not
1 natives here are on file in no more than 5 of Illinois's 102 counties. A few of them:
- Sixangle spurge (Euphorbia hexagona): only here
Where to start in Mercer County
If you have only one spot to fill, sun all day is where Mercer County gives you the most rated choice (173 plants), and Atlantic camas (Camassia scilloides) is the easiest start on that list. Under trees is the hard one here: 70 rated plants, so for that spot it is worth asking a local native-plant society about the 258 unrated natives too.