Maryland · zones 6b–7b
When to plant spinach in Maryland.
Sow between Feb 15 to Mar 29 in a typical year, keyed to Maryland's median last frost around Apr 8. A second, fall sowing fits Aug 21 to Oct 9. Dates below are state medians; your ZIP code shifts them by days to weeks.
The 2026 windows
Spinach dates for a typical Maryland season.
Direct sow
Feb 15 to Mar 29
Keyed to the ~Apr 8 last frost. Sow 0.5" deep, 3" apart.
Fall round
Aug 21 to Oct 9
Counted back from the ~Nov 4 first frost.
Harvest
~42 days later
~0.25 lb per plant over ~1 weeks.
Maryland spans more than one climate: Zone 7 is the most common zone, but the state runs 6b to 7b. 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 Maryland: watch for
The pests that find spinach here.
A middle-length season, about 210 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: Maryland gives spinach about 210 frost-free days, and it needs roughly 42 days to a first harvest. That fits about 25 re-sown rounds across the season, so you can keep it coming instead of picking once.
Planting spinach in Maryland: questions
When should I plant spinach in Maryland?+
In a typical Maryland year, sow spinach between Feb 15 to Mar 29, keyed to the state's median last frost around Apr 8. There's also a fall window: Aug 21 to Oct 9. Your exact dates shift with your ZIP code and microclimate.
What USDA zone is Maryland?+
Maryland spans zones 6b–7b, mostly zone 7. 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.