Native plants for Knox County, Indiana
712 native plants recorded in Knox County, Indiana
The USDA plant database has 965 plants recorded growing wild in Knox County. 712 of them are native to the lower 48, and 55 are introduced species that this page leaves out.
By type: 400 wildflowers and herbs, 134 grasses and sedges, 20 shrubs, 32 low woody plants, 87 trees, 39 vines. USDA has rated sun, soil and water needs for 290 of them (41%), and only those can be matched to a spot below. Annual ragweed (Ambrosia artemisiifolia), Bride's feathers (Aruncus dioicus) and 14 more are also recorded as introduced.
What fits each kind of spot in Knox County
| Spot | Rated to fit | Rated not to | Unrated |
|---|---|---|---|
| Sun all day | 289 | 0 | 423 |
| Half shade | 197 | 92 | 423 |
| Under trees | 104 | 185 | 423 |
| Heavy clay | 213 | 77 | 422 |
| Sandy, drains fast | 180 | 110 | 422 |
| Never watered | 114 | 176 | 422 |
| Stays soggy | 148 | 142 | 422 |
Sun all day in Knox County: 289 rated natives
114 wildflowers and herbs, 71 trees, 67 grasses and sedges, 14 shrubs, 13 vines, 10 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 - 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 - Common selfheal (Prunella vulgaris) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 1.5 ft mature · rapid growth · perennial
Half shade in Knox County: 197 rated natives
73 wildflowers and herbs, 51 trees, 47 grasses and sedges, 11 shrubs, 8 low woody plants, 7 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 - 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 - 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 - 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 Knox County: 104 rated natives
35 wildflowers and herbs, 29 trees, 28 grasses and sedges, 5 shrubs, 4 low woody plants, 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 - 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 - Prairie fleabane (Erigeron strigosus) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 3 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 Knox County: 213 rated natives
88 wildflowers and herbs, 56 grasses and sedges, 43 trees, 11 shrubs, 8 vines, 7 low woody plants. The first 8, ranked by how easy a start they make:
- 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 - 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 - Lanceleaf loosestrife (Lysimachia lanceolata) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 2.5 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 - 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 Knox County: 180 rated natives
60 wildflowers and herbs, 56 trees, 37 grasses and sedges, 11 shrubs, 10 vines, 6 low woody plants. The first 8, ranked by how easy a start they make:
- 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 - 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 - 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
Never watered in Knox County: 114 rated natives
37 wildflowers and herbs, 36 trees, 17 grasses and sedges, 10 shrubs, 7 vines, 7 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 - 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 - 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 Knox County: 148 rated natives
58 wildflowers and herbs, 51 grasses and sedges, 27 trees, 6 shrubs, 4 low woody plants, 2 vines. 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 - 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 - Limestone bittercress (Cardamine douglassii) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 1 ft mature · moderate 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 Knox County has that most of Indiana does not
18 natives here are on file in no more than 5 of Indiana's 92 counties. A few of them:
- Clustered poppymallow (Callirhoe triangulata): 2 counties
- Sand hickory (Carya pallida): 2 counties
- Black hickory (Carya texana): 2 counties
- Hybrid honeylocust (Gleditsia ×texana): 2 counties
- Rosemallow (Hibiscus lasiocarpos): 2 counties
- Water locust (Gleditsia aquatica): 3 counties
- Eastern beebalm (Monarda bradburiana): 3 counties
- Oceanblue phacelia (Phacelia ranunculacea): 3 counties
- Slimflower scurfpea (Psoralidium tenuiflorum): 3 counties
- Plains blackberry (Rubus laudatus): 3 counties
Where to start in Knox County
If you have only one spot to fill, sun all day is where Knox County gives you the most rated choice (289 plants), and Blackeyed Susan (Rudbeckia hirta) is the easiest start on that list. Under trees is the hard one here: 104 rated plants, so for that spot it is worth asking a local native-plant society about the 423 unrated natives too.