Follow the directions to Connecticut College.
The main entrance to the Native Plant Collection is directly across the street from the Williams Street entrance to Connecticut College at Harkness Chapel. Look for the double wrought iron gates with large golden leaves. When visiting the Native Plant Collection, cars may park along Williams Street if space is available. Alternate parking is at 33 Gallows Lane or in the South Parking Lot on the main campus (to park in the South Parking Lot, visitors must obtain a parking permit from the guard house at the main entrance of the College). Tour buses may let passengers out at the main gate on Williams Street, but then must park in the south end of the South Parking Lot on the Connecticut College campus.
The Caroline Black Garden is just off Route 32; best accessed by taking the road to the College Athletic Center and an immediate right onto Winchester Road. Take a right at the first driveway, which leads to the Career Services building (Vinal Cottage). When visiting the Caroline Black Garden, 4-5 cars can usually fit in the parking lot behind the Career Services building. Buses may let passengers out at the entrance to the parking lot, and then must park at the south end of the South Parking lot on the main campus.
The Arboretum Office is located at 33 Gallows Lane, New London CT 06320.