Native plants for Washington County, Pennsylvania
691 native plants recorded in Washington County, Pennsylvania
The USDA plant database has 1,090 plants recorded growing wild in Washington County. 691 of them are native to the lower 48, and 173 are introduced species that this page leaves out.
By type: 413 wildflowers and herbs, 99 grasses and sedges, 28 shrubs, 32 low woody plants, 92 trees, 27 vines. USDA has rated sun, soil and water needs for 274 of them (40%), and only those can be matched to a spot below. Annual ragweed (Ambrosia artemisiifolia), Bride's feathers (Aruncus dioicus) and 22 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 | 274 | 0 | 417 |
| Half shade | 169 | 105 | 417 |
| Under trees | 85 | 189 | 417 |
| Heavy clay | 191 | 83 | 417 |
| Sandy, drains fast | 166 | 108 | 417 |
| Never watered | 116 | 158 | 417 |
| Stays soggy | 124 | 149 | 418 |
Sun all day in Washington County: 274 rated natives
106 wildflowers and herbs, 74 trees, 56 grasses and sedges, 16 shrubs, 12 low woody plants, 10 vines. The first 8, ranked by how easy a start they make:
- American speedwell (Veronica americana) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 0.8 ft mature · rapid growth · perennial - 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 - Bayhops (Ipomoea pes-caprae) vines
USDA growing data on file · conspicuous flowers · photo available · about 1 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 - Closed bottle gentian (Gentiana andrewsii) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 2 ft mature · moderate growth · perennial
Half shade in Washington County: 169 rated natives
65 wildflowers and herbs, 47 trees, 35 grasses and sedges, 8 shrubs, 7 vines, 7 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 - Marsh bellflower (Campanula aparinoides) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 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 - 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 - Common blue wood aster (Symphyotrichum cordifolium) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 5 ft mature · moderate growth · perennial · high shade tolerance
Under trees in Washington County: 85 rated natives
28 wildflowers and herbs, 28 trees, 23 grasses and sedges, 3 shrubs, 2 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 - Marsh bellflower (Campanula aparinoides) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 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 - 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 - Common blue wood aster (Symphyotrichum cordifolium) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 5 ft mature · moderate growth · perennial
Heavy clay in Washington County: 191 rated natives
81 wildflowers and herbs, 47 grasses and sedges, 40 trees, 11 shrubs, 7 low woody plants, 5 vines. 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 - Marsh bellflower (Campanula aparinoides) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 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 - Skunk cabbage (Symplocarpus foetidus) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 2 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 - Spring avens (Geum vernum) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 1.6 ft mature · moderate growth · perennial
Sandy, drains fast in Washington County: 166 rated natives
57 wildflowers and herbs, 56 trees, 28 grasses and sedges, 12 shrubs, 7 vines, 6 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 - Bayhops (Ipomoea pes-caprae) vines
USDA growing data on file · conspicuous flowers · photo available · about 1 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 - Gray goldenrod (Solidago nemoralis) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 2 ft mature · rapid growth · perennial - Marsh bellflower (Campanula aparinoides) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 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 - Skunk cabbage (Symplocarpus foetidus) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 2 ft mature · moderate growth · perennial
Never watered in Washington County: 116 rated natives
38 trees, 37 wildflowers and herbs, 13 shrubs, 12 grasses and sedges, 9 low woody plants, 7 vines. 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 - 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 - Bayhops (Ipomoea pes-caprae) vines
USDA growing data on file · conspicuous flowers · photo available · about 1 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 - 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 goldstar (Hypoxis hirsuta) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 0.8 ft mature · moderate growth · perennial
Stays soggy in Washington County: 124 rated natives
51 wildflowers and herbs, 42 grasses and sedges, 22 trees, 4 shrubs, 3 low woody plants, 2 vines. 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 - 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 - 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 - Marsh bellflower (Campanula aparinoides) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 2 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 - Broadleaf arrowhead (Sagittaria latifolia) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 4.9 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
Natives Washington County has that most of Pennsylvania does not
8 natives here are on file in no more than 3 of Pennsylvania's 67 counties. A few of them:
- Mountain decumbent goldenrod (Solidago curtisii): 2 counties
- Heartleaf hedgenettle (Stachys cordata): 2 counties
- Drummond's aster (Symphyotrichum drummondii): 2 counties
- Sand grape (Vitis rupestris): 2 counties
- Atlantic camas (Camassia scilloides): 3 counties
- Rose mock vervain (Glandularia canadensis): 3 counties
- Canadian summer bluet (Houstonia canadensis): 3 counties
- Nits and lice (Hypericum drummondii): 3 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 (274 plants), and American speedwell (Veronica americana) is the easiest start on that list. Under trees is the hard one here: 85 rated plants, so for that spot it is worth asking a local native-plant society about the 417 unrated natives too.