Native plants for Washington County, Illinois
569 native plants recorded in Washington County, Illinois
The USDA plant database has 844 plants recorded growing wild in Washington County. 569 of them are native to the lower 48, and 106 are introduced species that this page leaves out.
By type: 328 wildflowers and herbs, 101 grasses and sedges, 16 shrubs, 26 low woody plants, 66 trees, 32 vines. USDA has rated sun, soil and water needs for 250 of them (44%), and only those can be matched to a spot below. Annual ragweed (Ambrosia artemisiifolia), Bride's feathers (Aruncus dioicus) and 12 more are also recorded as introduced.
What fits each kind of spot in Washington County
| Spot | Rated to fit | Rated not to | Unrated |
|---|---|---|---|
| Sun all day | 250 | 0 | 319 |
| Half shade | 167 | 83 | 319 |
| Under trees | 89 | 161 | 319 |
| Heavy clay | 182 | 68 | 319 |
| Sandy, drains fast | 157 | 93 | 319 |
| Never watered | 111 | 139 | 319 |
| Stays soggy | 123 | 127 | 319 |
Sun all day in Washington County: 250 rated natives
94 wildflowers and herbs, 64 grasses and sedges, 60 trees, 14 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 - 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 - Bulbous bittercress (Cardamine bulbosa) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 1.4 ft mature · rapid 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 - Climbing dayflower (Commelina diffusa) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 1 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
Half shade in Washington County: 167 rated natives
60 wildflowers and herbs, 47 grasses and sedges, 40 trees, 8 vines, 8 shrubs, 4 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 · 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 - 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 - Dotted smartweed (Polygonum punctatum) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 3.2 ft mature · moderate growth · perennial · high shade tolerance - Missouri ironweed (Vernonia missurica) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 6 ft mature · moderate growth · perennial · high shade tolerance - Pinnate prairie coneflower (Ratibida pinnata) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 4 ft mature · moderate growth · perennial · high shade tolerance
Under trees in Washington County: 89 rated natives
30 grasses and sedges, 26 wildflowers and herbs, 24 trees, 3 vines, 3 low woody plants, 3 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 - 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 - 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 - Dotted smartweed (Polygonum punctatum) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 3.2 ft mature · moderate growth · perennial - Missouri ironweed (Vernonia missurica) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 6 ft mature · moderate growth · perennial - Pinnate prairie coneflower (Ratibida pinnata) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 4 ft mature · moderate growth · perennial
Heavy clay in Washington County: 182 rated natives
70 wildflowers and herbs, 53 grasses and sedges, 39 trees, 7 vines, 7 low woody plants, 6 shrubs. 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 - 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 - Heartleaf peppervine (Ampelopsis cordata) vines
USDA growing data on file · conspicuous flowers · photo available · about 2 ft mature · moderate growth · perennial - Lanceleaf loosestrife (Lysimachia lanceolata) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 2.5 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 - 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 Washington County: 157 rated natives
54 wildflowers and herbs, 45 trees, 38 grasses and sedges, 12 vines, 6 shrubs, 2 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 - 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 - Heartleaf peppervine (Ampelopsis cordata) vines
USDA growing data on file · conspicuous flowers · photo available · about 2 ft mature · moderate growth · perennial - Lanceleaf loosestrife (Lysimachia lanceolata) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 2.5 ft mature · moderate growth · perennial - Missouri goldenrod (Solidago missouriensis) 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
Never watered in Washington County: 111 rated natives
36 wildflowers and herbs, 35 trees, 20 grasses and sedges, 9 shrubs, 7 vines, 4 low woody plants. 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 - 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 - Common goldstar (Hypoxis hirsuta) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 0.8 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
Stays soggy in Washington County: 123 rated natives
45 wildflowers and herbs, 44 grasses and sedges, 23 trees, 4 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 - 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 - 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 - Stiff marsh bedstraw (Galium tinctorium) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 0.8 ft mature · moderate growth · perennial · takes saturated soil
Natives Washington County has that most of Illinois does not
3 natives here are on file in no more than 5 of Illinois's 102 counties. A few of them:
- Golden sedge (Carex aurea): 4 counties
- Star tickseed (Coreopsis pubescens): 4 counties
- Standing-cypress (Ipomopsis rubra): 4 counties
Where to start in Washington County
If you have only one spot to fill, sun all day is where Washington County gives you the most rated choice (250 plants), and American water-willow (Justicia americana) is the easiest start on that list. Under trees is the hard one here: 89 rated plants, so for that spot it is worth asking a local native-plant society about the 319 unrated natives too.