Rhode Island · zones 6b–7a
When to plant potatoes in Rhode Island.
Sow between Mar 3 to Apr 5 in a typical year, keyed to Rhode Island's median last frost around Apr 10. Dates below are state medians; your ZIP code shifts them by days to weeks.
The 2026 windows
Potatoes dates for a typical Rhode Island season.
Direct sow
Mar 3 to Apr 5
Keyed to the ~Apr 10 last frost. Sow 4" deep, 12" apart.
Harvest
~90 days later
~3 lb per plant over ~1 weeks.
Rhode Island spans more than one climate: Zone 6 is the most common zone, but the state runs 6b 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.