we examined the native ferns that grew in the southwestern Pennsylvania region, and throughout the Wilson farm property.

It is commonly believed that invasive plants arrive in the United States accidentally; a study by the Brooklyn Botanic Garden showed that this is not so. The study found that half of the worst ...

The types of native species included in this table are trees, shrubs, perennials, ground covers, ferns, grasses, sedges, rushes, and vines. Table last updated March of 2025.