The Henry Foundation for Botanical Research (50 acres) is a nonprofit botanical garden located at 801 Stony Lane, Gladwyne, Pennsylvania.
The garden was established in 1948 by botanist and plant explorer Mary Gibson Henry (1884-1967) for plants that she collected through remote areas of the West, Midwest, and Southeast United States.
Today the garden contains scenic plantings, gardens, and trails for walking and horseback riding set among steep hills along Rock Creek, near the Schuylkill River. It also contains 15 taxa of native magnolias, in a program established under the auspices of the North American Plant Collections Consortium (NAPCC) to help broaden the genetic diversity of organized botanical collections.