Massachusetts · zones 5a–7a
When to plant garlic in Massachusetts.
Massachusetts's window for garlic runs on the fall side of the season. A second, fall sowing fits Sep 19 to Nov 4. Dates below are state medians; your ZIP code shifts them by days to weeks.
The 2026 windows
Garlic dates for a typical Massachusetts season.
Fall round
Sep 19 to Nov 4
Counted back from the ~Oct 20 first frost.
Harvest
~240 days later
~0.2 lb per plant over ~1 weeks.
Massachusetts spans more than one climate: Zone 6 is the most common zone, but the state runs 5a to 7a. That's why the planner works from your ZIP code's frost dates, not your zone — mountain and coastal gardens in the same state can be three weeks apart.