find us on Facebook Wildflower of the Week RSS feed blogger
Home | Search | Browse | Identify | Buy | Login
wildflower logo
Home > Invasive Plants
Results matching Invasive plants
Invasive plants are non-native species that aggressively crowd out other vegetation. This website designates invasive plants based on their behavior in Pennsylvania and the northeastern United States. More information on invasive plants...
Bull Thistle
Bull Thistle (Cirsium vulgare)
Family: Asteraceae (Sunflower) · Invasive
Location: Sandy Creek Trail
Date: 7/20/2002
Detail | All pics of this flower
Field Bindweed
Field Bindweed (Convolvulus arvensis L.)
Family: Convolvulaceae (Morning Glory) · Invasive
Location: Panhandle Trail
Date: 7/27/2002
Detail | All pics of this flower
Purple Loosestrife
Purple Loosestrife (Lythrum salicaria)
Family: Lythraceae (Loostrife) · Invasive
Location: Montour Trail
Date: 7/27/2002
Detail | All pics of this flower
Japanese Knotweed
Japanese Knotweed (Polygonum cuspidatum)
Other Common Names: Japanese Bamboo
Family: Polygonaceae (Buckwheat) · Invasive
Location: Samuel Justice Trail
Date: 8/31/2002
Detail | All pics of this flower
Common Mullein
Common Mullein (Verbascum thapsus L.)
Family: Scrophulariaceae (Figwort) · Invasive
Location: Stavich Bicycle Trail
Date: 10/5/2002
Detail | All pics of this flower
Wild Parsnip
Wild Parsnip (Pastinaca sativa)
Family: Apiaceae (Parsley) · Invasive
Location: Montour Trail
Date: 6/29/2002
Detail | All pics of this flower