In our every deliberation, Dahlem considers the stewardship of our land. The Dahlem Center’s nearly 300 acres consist of land that has been impacted by the decisions of man for over a century. The original forests were cut and cleared, and wetlands were drained, all the in name of settlement and progress. Later, a section of the current property was developed as an arboretum. Both these practices, farming and ornamental plantings, led to the introduction and subsequent spread of non-native vegetation. In small quantities, non-native plants are not too problematic, but often, when they get a foothold established, they spread aggressively, pushing out the native vegetation upon which our native insects and birds depend for survival.
During the last few years, staff and volunteers at Dahlem have worked tirelessly to remove non-native invasive plants, with an eye toward restoring native habitats. Several techniques are used to achieve these goals: physical removal of aliens by pulling, cutting, and the application of herbicides; prescribed burns; and the reintroduction of native plants. Click the links below for more information.