Pennsylvania is a nation abundant in a large diverseness of Sir Herbert Beerbohm Tree , shrubs , grasses and flowers . This northeastern state , known as " The Keystone State , " is divided by the Appalachian Plateau into northerly and southerly growing zone . Besides its poison parsley trees , Pennsylvania is acknowledge for the balmy pinkish and whitened blooms of the heap laurel , which is the body politic heyday . Some coarse Pennsylvania smoke include big bluestem , switch eatage and Native American grass .
Percentage of Native Plants
About 3,400 plant species grow idle in Pennsylvania , according to the Nature Conservancy in Pennsylvania website . However , Pennsylvania ’s native plants consist of less than 63 percent of the vascular flora of the state , says the University of Pennsylvania Press internet site . Roughly 30 per centum of these are listed as having special business . Over 5 percent of the state ’s native plants are study extirpate or send away . Another 20 percent are endangered , with 52 percentage considered rare and 3 pct classified as vulnerable .
Geography
Pennsylvania mostly has two gardening geographical zone : Zones 5 and 6 . USDA Zone 5 , which lies in the northerly one-half of the state , has higher elevation , and the average minimum temperature is 10 degree to minus 20 stage F. The state ’s southerly half is in USDA Zone 6 and has humbled elevations , with an average coldest temperature of 0 degrees to minus 10 degrees atomic number 9 , notes the Pennsylvania Department of Conservation and Natural Resources .
Shrubs and Trees
Cercis canadensis are bush or small trees with purple flush in give . The maple - impart viburnum is a multistemmed plant or shrub with white bloom and edible Charles Edward Berry . Buttonwood trees produce an interesting yield and have white flowers that bloom from June through September .
The satiny dogwood tree is multistemmed and bring on white summertime flowers and disconsolate berry . The witch hazelnut tree , a flowering industrial plant with yellow , fragrant flush , has been used for medicative purposes .
Flowers
Corn cockles are hairy purple or reddish flowers found in caryopsis fields throughout the state . They grow as either annuals or biennials to rough 1 to 3 infantry tall , says the Botanical Society of Western Pennsylvania .
Wild gingers are cupful - shaped brown flowers that usually farm in the rich , moist , shady woods establish throughout Pennsylvania .
The golden club has many lily-livered efflorescence and elongated leaves , make a clod that arises from its rootstalk . It typically rise in swamps and bogs in the southeastern and eastern county of the state .
Warning
Several Pennsylvania plants are poisonous , such as baneberry , which are erect plant that have buddy-buddy root stalks and produce red and white berries . Both the foliation and fruit of the baneberry ( Actaea rubra ) are fairly toxic , harmonize to the University of Pennsylvania School of Veterinary Medicine . Clinical planetary house of poisoning may let in diarrhea , vomiting and griping , or neurologic symptom of helplessness and gaining control .
