Arnold Arboretum
Arboretum · Massachusetts
Harvard's 281-acre living museum in Jamaica Plain holds one of North America's great tree collections (maples, hickories, ginkgos, and conifer-framed hillsides), usually at its best from mid-October to early November.
Don’t miss
Peak: October 21–October 25
Color builds from October 8 · mostly bare by November 13
Method: daily ERA5 temperatures drive a photoperiod + chilling phenology model, sampled at Arnold Arboretum’s own coordinates and elevation (35 m) rather than a regional average. Estimates, not promises — check locally before you plan a trip around it.
Arnold Arboretum on the map
More things to do in Massachusetts
Boston Public Garden
GardenPeak October 23
America's first public botanical garden colors gently through late October, with weeping willows around the lagoon, ginkgos and maples over the promenades, and the Common's big oaks and elms right across Charles Street.
Don’t miss: Lagoon willows · Commonwealth Avenue Mall next door
Mount Auburn Cemetery
Garden cemeteryPeak October 23
America's first garden cemetery is quietly one of Greater Boston's best foliage walks: 175 acres of century-old sugar maples, beeches, and oaks over Victorian monuments, with a tower view back to the Boston skyline.
Don’t miss: Washington Tower view · Auburn Lake dell
Middlesex Fells Reservation
State parkPeak October 22
Twenty-five hundred acres of rocky oak-and-hickory woodland just north of the city. The Skyline Trail's ledges open over reservoirs ringed in October color, close enough to reach on the Orange Line.
Don’t miss: Skyline Trail ledges · Wright's Tower
Walden Pond State Reservation
State parkPeak October 21
Thoreau's kettle pond in Concord rings itself in oak, maple, and hickory color by mid-to-late October. The 1.7-mile shore path is an easy morning walk, with the clearest light early and the fewest people on a weekday.
Don’t miss: Shore path loop · Thoreau house site
Plan from a city
Frequently asked
- When does Arnold Arboretum peak in 2026?
- Peak color is predicted for October 21–October 25 (best estimate October 23). Color starts around October 8 and is mostly bare by November 13.
- What is Arnold Arboretum best for?
- Tree-nerd variety.
- How do I get to Arnold Arboretum?
- The closest city is Boston, about 6 mi away (it's right in town). It's part of Massachusetts's fall lineup.
Own or manage Arnold Arboretum? Update your listing or get in touch.