Harkness Memorial State Park
State park with six themed formal gardens by Beatrix Farrand beside a historic mansion, plus lawns and shoreline. Open daily from 8 a.m.; out-of-state vehicles pay a fee.
Arboretum · Native plant garden · New London, CT
A 750-acre college arboretum in New London with a native plant collection, the Caroline Black Garden and a greenhouse. Open daily sunrise to sunset, free.

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830 Williams Street, New London, CT
Check the date you plan to visit. No live opening status.
Checked September 29, 2026 · Official visitor source
For a future visit, confirm the date, ticket availability and special-event exceptions with the garden.
Independent advertising.
Not a garden recommendation.
Accessibility details have not been recorded for this garden. Check the official visitor information for surfaces, slopes, step-free routes, facilities and equipment.
Official visitor information