Armstrong-Kelley Park is an 8.5 acre garden and woodland oasis in Osterville, Massachusetts. In Spring 2020, The Cape Cod Horticultural Society (CCHS), which has owned and maintained Armstrong-Kelley Park for nearly 100 years, approved a plan to be integrated into The Trustees. Through this integration, which became official in the Fall of 2021, this treasured community resource is now a Trustees reservation, and its 12th public garden.

Enjoy seven trails through the woodland, spot more than two dozen rare species of trees and hundreds of rhododendron and azalea plants, and enjoy the expanded John Folk Water Garden complete with sculptures and fish pond. Picnic tables and benches are scattered throughout.

Children’s Garden
The newly renovated Children’s Garden has reopened. Play on Liam’s Train and explore all it has to offer!

Things To Do

• Dog walking
• Picnicking
• Walking/Hiking (Easy)

When To Visit
Daily, sunrise to sunset.

Admission
FREE to all.

675 Main Street
Osterville, MA 02655

Get directions on Google Maps

From points north: Follow I-93 S, MA-3 S and US-6 E to MA-149 S in Barnstable. Take exit 65 from US-6 E. Follow Osterville West Barnstable Road and Main Street to your destination.

From points west: Take I-90 E/Massachusetts Turnpike, I-495 S, MA-25 E and US-6 E to MA-149 S in Barnstable. Take exit 65 from US-6 E. Follow Osterville West Barnstable Rd and Main St to your destination

New Garden Explorer Tool

Uncover the horticultural richness of Armstrong-Kelley Park using the new Garden Explorer tool! This free online portal provides in-depth access to the public garden’s entire plant collection. Search for its common or botanical name, browse an alphabetical list, or pinpoint each plant’s location on an interactive map.

What You’ll Find

• Lake/pond/wetland
• Public Garden
• Dozens of rare and unusual trees, including a Franklinia specimen
• 250 rhododendron and azalea plants
• A holly dell containing many varieties
• The John Folk Water Garden, with sculpture and fish pond
• Seven hillside trails
• Children’s Garden with Liam’s Train
• Picnic tables for gatherings

For events and program information, please visit our Things to Do page.

Facilities

• Picnic Tables

Accessibility

• Public Transportation
• Accessible Parking
• The public garden core of the property is fully accessible. The main pathways in the front of the park are also accessible, made of stone dust.

There is a trail map posted on a kiosk in the parking area.

We recommend that you download a trail map before you head out.

• Hunting is not permitted at this reservation. Learn more about hunting on Trustees properties.
• Dogs are welcome, on-leash only.
• Open sunrise to sunset.
• Please carry out everything you carry in, leave no trash behind.
• PHOTOGRAPHY: We ask that photographers or their clients become Supporting Level Members before conducting portrait sessions at this property.  Click here for more information, and to request permission for any portrait sessions. The Trustees of Reservations reserves the right, and may give permission to its designated photographers and videographers, or to outside media, to photograph or video visitors and program participants at all its facilities and properties.
• The main pathways in the front of the park are accessible, made of stone dust, and accessible parking is available.