Space
Spinach in the US
A good maincrop variety that's ideal for starting undercover. It'll give you a reliable harvest, especially if you're looking for an earlier crop.
Sow window for Spinach generally, zone 6. In season now.
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How to grow it
Spinach likes cooler weather, so timing is key to avoid it bolting too soon. For Zones 3-4, sow in April, May, July, and August. Zone 5 can start in March, April, May, then August, September. If you're in Zone 6, March, April, August, September is good. Zones 7-8 can sow February, March, April, September, October. And for those warmer Zones 9-10, you're looking at January, February, March, September, October, November, December. Sow seeds directly outdoors about half an inch (1-2 cm) deep, spaced an inch (2.5 cm) apart, in rows about 12 inches (30 cm) apart. You can sow a small batch every couple of weeks for a steady supply, you know what I mean.
Once your spinach seedlings are up and growing a bit, you'll want to thin them out. Aim for plants to be about 4-6 inches (10-15 cm) apart, that gives them room to spread out properly. If you started any indoors, get them outside once the weather settles, after your last frost date, or keep them in a cold frame. Spinach does pretty well in containers too, especially if you're a bit short on space, just make sure the pot is big enough for them to grow.
More Spinach varieties
Track your Spinach from packet to plate
Sowing reminders and harvest forecasts for your own frost dates, the Seed Tin, Scan Centre for any label or packet, and the Potty Mouth Garden Club. Free to start.
Allotment keeper in the North East of England, the voice behind the Tony C Smith YouTube channel, and the gardener who built GrowMore CookMore. Club numbers on this page update as members log their plots. Last updated 3 September 2026.