The history of weeds makes an important contribution to understanding the cultural landscape. The articles presented in this collection trace not only the story of how introduced species - indigenous and exotic - came to be part of the landscape but also cast light on how we bring to gardening not only botanical choices but also aesthetic and nostalgic ones. Among Dwyer's articles are some that focus as much on the people as the plants, and on their place in art and medicine as well as in botany.