This field guide was designed for people with minimal botanical training. It is an identification aid to plant species that have ecological indicator value, are on sensitive species lists, or are considered noxious weeds. It contains illustrations and simplified taxonomic descriptions.

In this field guide to the future, esteemed Harvard University botanist Peter Del Tredici unveils the plants that will become even more dominant in urban environments under projected future environmental conditions. These plants are the most important and most common plants in cities. Learning what they are and the role they play, he writes, will help us all make cities more livable and enjoyable. With more than 1000 photos, readers can easily identify these powerful plants. Learn about the fascinating cultural history of each plant.