Native plants for Allegheny County, Pennsylvania
1,115 native plants recorded in Allegheny County, Pennsylvania
The USDA plant database has 1,943 plants recorded growing wild in Allegheny County. 1,115 of them are native to the lower 48, and 445 are introduced species that this page leaves out.
By type: 627 wildflowers and herbs, 189 grasses and sedges, 53 shrubs, 63 low woody plants, 138 trees, 45 vines. USDA has rated sun, soil and water needs for 409 of them (37%), and only those can be matched to a spot below. Annual ragweed (Ambrosia artemisiifolia), Biennial wormwood (Artemisia biennis) and 30 more are also recorded as introduced.
What fits each kind of spot in Allegheny County
| Spot | Rated to fit | Rated not to | Unrated |
|---|---|---|---|
| Sun all day | 408 | 0 | 707 |
| Half shade | 258 | 150 | 707 |
| Under trees | 134 | 274 | 707 |
| Heavy clay | 278 | 131 | 706 |
| Sandy, drains fast | 254 | 155 | 706 |
| Never watered | 168 | 241 | 706 |
| Stays soggy | 196 | 212 | 707 |
Sun all day in Allegheny County: 408 rated natives
148 wildflowers and herbs, 101 trees, 94 grasses and sedges, 30 shrubs, 19 low woody plants, 16 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 vetch (Vicia americana) vines
USDA growing data on file · conspicuous flowers · photo available · about 1.3 ft mature · moderate 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 - Bottle gentian (Gentiana clausa) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 1.5 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
Half shade in Allegheny County: 258 rated natives
96 wildflowers and herbs, 64 trees, 61 grasses and sedges, 15 shrubs, 12 low woody plants, 10 vines. The first 8, ranked by how easy a start they make:
- American vetch (Vicia americana) vines
USDA growing data on file · conspicuous flowers · photo available · about 1.3 ft mature · moderate growth · perennial · high shade tolerance - 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 - 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 - Horseflyweed (Baptisia tinctoria) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 2.5 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 - 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
Under trees in Allegheny County: 134 rated natives
44 wildflowers and herbs, 39 trees, 37 grasses and sedges, 7 shrubs, 4 vines, 3 low woody plants. The first 8, ranked by how easy a start they make:
- American vetch (Vicia americana) vines
USDA growing data on file · conspicuous flowers · photo available · about 1.3 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 dewberry (Rubus hispidus) low woody plants
USDA growing data on file · conspicuous flowers · photo available · about 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 - Horseflyweed (Baptisia tinctoria) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 2.5 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 - 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
Heavy clay in Allegheny County: 278 rated natives
110 wildflowers and herbs, 77 grasses and sedges, 54 trees, 18 shrubs, 11 low woody plants, 8 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 - Bristly dewberry (Rubus hispidus) low woody plants
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 - Groundnut (Apios americana) vines
USDA growing data on file · conspicuous flowers · photo available · about 1 ft mature · rapid 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 - Marsh bellflower (Campanula aparinoides) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 2 ft mature · moderate 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 - Moss phlox (Phlox subulata) low woody plants
USDA growing data on file · conspicuous flowers · photo available · about 0.5 ft mature · rapid growth · perennial
Sandy, drains fast in Allegheny County: 254 rated natives
79 trees, 78 wildflowers and herbs, 49 grasses and sedges, 25 shrubs, 12 vines, 11 low woody plants. The first 8, ranked by how easy a start they make:
- American vetch (Vicia americana) vines
USDA growing data on file · conspicuous flowers · photo available · about 1.3 ft mature · moderate 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 - Bayhops (Ipomoea pes-caprae) vines
USDA growing data on file · conspicuous flowers · photo available · about 1 ft mature · moderate 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 - 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 - Groundnut (Apios americana) vines
USDA growing data on file · conspicuous flowers · photo available · about 1 ft mature · rapid growth · perennial - Horseflyweed (Baptisia tinctoria) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 2.5 ft mature · moderate growth · perennial
Never watered in Allegheny County: 168 rated natives
54 trees, 48 wildflowers and herbs, 22 shrubs, 22 grasses and sedges, 12 low woody plants, 10 vines. The first 8, ranked by how easy a start they make:
- American vetch (Vicia americana) vines
USDA growing data on file · conspicuous flowers · photo available · about 1.3 ft mature · moderate growth · perennial · high drought tolerance - Horseflyweed (Baptisia tinctoria) wildflowers and herbs
USDA growing data on file · conspicuous flowers · photo available · about 2.5 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 - 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
Stays soggy in Allegheny County: 196 rated natives
78 wildflowers and herbs, 72 grasses and sedges, 28 trees, 11 shrubs, 4 low woody plants, 3 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 - 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 - 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 - 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 - 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
Natives Allegheny County has that most of Pennsylvania does not
13 natives here are on file in no more than 3 of Pennsylvania's 67 counties. A few of them:
- Deam's threeseed mercury (Acalypha deamii): only here
- Roundseed St. Johnswort (Hypericum sphaerocarpum): only here
- Compassplant (Silphium laciniatum): only here
- White blue-eyed grass (Sisyrinchium albidum): only here
- Drummond's aster (Symphyotrichum drummondii): 2 counties
- Atlantic camas (Camassia scilloides): 3 counties
- Smooth horsetail (Equisetum laevigatum): 3 counties
- Inkberry (Ilex glabra): 3 counties
- Blue spruce (Picea pungens): 3 counties
- Sandhill amaranth (Amaranthus arenicola): 3 counties
Where to start in Allegheny County
If you have only one spot to fill, sun all day is where Allegheny County gives you the most rated choice (408 plants), and American speedwell (Veronica americana) is the easiest start on that list. Under trees is the hard one here: 134 rated plants, so for that spot it is worth asking a local native-plant society about the 707 unrated natives too.