How to Grow Spinach
Spinacia oleracea
Cold-hardy, nutrient-dense green that thrives in cool spring and fall weather.
By the Plants by Zone Editorial Team · Reviewed June 1, 2026
About spinach
Spinach is a fast cool-season green that’s exceptionally cold-hardy — it can even overwinter under cover in many zones. It bolts quickly once days lengthen and warm, so it’s best grown in early spring and fall. Direct-sow it in cold soil for the sweetest, most tender leaves.
When to plant and harvest spinach
Timing is relative to your frost dates. Find your USDA zone for exact dates, or browse the month-by-month calendars.
Start seeds indoors
Rarely needed
Transplant outdoors
Resents transplanting — direct-sow
Direct sow
4–6 weeks before last frost, and late summer for fall/overwinter
Harvest
Spring and fall
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How to grow spinach step by step
- 1
Direct-sow ½ in deep in cold soil as early as it can be worked.
- 2
Thin seedlings to 3–6 in to give leaves room.
- 3
Keep evenly moist and harvest before warm weather triggers bolting.
- 4
For fall, sow in late summer where afternoon shade keeps the soil cool enough to germinate.
- 5
In mild zones, sow in fall and overwinter under row cover for an early spring crop.
Common problems growing spinach
⚠ Poor germination in heat
Spinach won’t sprout in warm soil — sow in cool conditions or pre-chill seed.
⚠ Bolting
Long warm days trigger flowering; grow in spring/fall and pick promptly.
⚠ Leaf miners
Use row cover and remove tunneled leaves.
✓ Good companions for spinach
✗ Keep away from
🧺 Harvesting spinach
Pick outer leaves as needed or cut the whole plant. Harvest before flower stalks appear, since leaves turn bitter once bolting begins.
Spinach: frequently asked questions
When should you plant spinach?＋
In most regions you start seeds indoors rarely needed, then transplant resents transplanting — direct-sow — or direct sow 4–6 weeks before last frost, and late summer for fall/overwinter. Timing is relative to your last frost, so find your USDA hardiness zone for the exact planting dates where you live.
When should I plant spinach?＋
In early spring as soon as soil can be worked, and again in late summer for a fall crop. It loves cold weather.
Can spinach survive frost?＋
Yes — it’s very cold-hardy and can overwinter under cover in many zones.
Sources & review
Written and maintained by the Plants by Zone Editorial Team. Planting times are based on USDA hardiness zones and NOAA frost-date normals, with care guidance drawn from Cooperative Extension sources. Last reviewed June 1, 2026.
USDA Plant Hardiness Zone MapNOAA U.S. climate normalsCooperative Extension
Grow spinach in your zone
See exactly when to plant and what else to grow alongside spinach, tailored to your USDA hardiness zone.
