Rhode Island · zones 6b–7a
When to plant spinach in Rhode Island.
Sow between Feb 17 to Mar 31 in a typical year, keyed to Rhode Island's median last frost around Apr 10. A second, fall sowing fits Aug 13 to Oct 1. Dates below are state medians; your ZIP code shifts them by days to weeks.
The 2026 windows
Spinach dates for a typical Rhode Island season.
Direct sow
Feb 17 to Mar 31
Keyed to the ~Apr 10 last frost. Sow 0.5" deep, 3" apart.
Fall round
Aug 13 to Oct 1
Counted back from the ~Oct 27 first frost.
Harvest
~42 days later
~0.25 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.
In Rhode Island: watch for
The pests that find spinach here.
A middle-length season, about 200 frost-free days, means spinach overlaps leaf miners for a stretch each summer. Check plants every week or two and treat early.
Winding pale tunnels or blotches inside the leaves.
Organic fix: Pick and destroy mined leaves; cover the row.
Cercospora leaf spot
Round spots with gray centers and a red-purple rim, oldest leaves worst.
Organic fix: Space wider so leaves dry fast, clear old debris, and pull pigweed and lambsquarters nearby.
Your season math: Rhode Island gives spinach about 200 frost-free days, and it needs roughly 42 days to a first harvest. That fits about 23 re-sown rounds across the season, so you can keep it coming instead of picking once.
Planting spinach in Rhode Island: questions
When should I plant spinach in Rhode Island?+
In a typical Rhode Island year, sow spinach between Feb 17 to Mar 31, keyed to the state's median last frost around Apr 10. There's also a fall window: Aug 13 to Oct 1. Your exact dates shift with your ZIP code and microclimate.
What USDA zone is Rhode Island?+
Rhode Island spans zones 6b–7a, mostly zone 6. But frost dates, not zones, set planting time. The free planner uses your ZIP code's actual frost dates.
How many spinach plants do I need?+
Depends who you're feeding. The crop page has exact counts per household size, or the free planner does the math for your family in about 60 seconds.