How to Start Spinach Seeds
Cool-season superfood that thrives in conditions other crops hate!
Spinach Loves Cold!
Unlike most vegetables, spinach prefers cool temps (45-75°F) and can even germinate near freezing! It's one of the first crops you can plant in spring and last in fall.
Step-by-Step Guide
Soak Seeds (Optional)
Soak seeds in water for 24 hours before planting to improve germination, especially in warmer conditions.
Prepare Containers
Fill cells or pots with moistened seed starting mix. Spinach has a long taproot, so deeper cells (2"+) work better.
Plant Seeds
Plant 2-3 seeds per cell, 1/2 inch deep. Cover and press gently. Spinach doesn't need light to germinate.
Keep Cool & Moist
Unlike most seeds, spinach prefers cooler temps. No heat mat needed! Keep soil consistently moist. Germination: 5-9 days.
Provide Light
Once sprouted, give seedlings 10-12 hours of light. Spinach is a short-day plant - too much light triggers bolting!
Transplant Carefully
Transplant when seedlings have 3-4 true leaves. Handle gently - spinach has a delicate taproot. Plant at same depth as in cell.
Best Varieties for Containers
Bloomsdale Long Standing
Classic heirloom, savoy (crinkled) leaves. Slow to bolt. Great flavor.
Space
Smooth leaves, very slow to bolt. Excellent for baby leaf harvest.
Tyee
Semi-savoy, very bolt resistant. Good for spring and fall planting.
Red Kitten
Red-veined leaves, mild flavor. Beautiful in salads!
Frequently Asked Questions
When should I start spinach seeds?
Spinach is a cool-season crop. Start indoors 4-6 weeks before last frost for spring, or direct sow 4-6 weeks before first fall frost. It tolerates light frost!
Why does my spinach bolt so quickly?
Spinach bolts (goes to seed) in response to long days and heat. Grow in spring/fall, choose slow-bolt varieties, and provide afternoon shade in warm weather.
What temperature do spinach seeds need?
Spinach germinates best at 45-75°F. It can even sprout at temperatures as low as 35°F! Unlike most crops, it dislikes heat - above 85°F, germination drops significantly.
Should I soak spinach seeds before planting?
Soaking spinach seeds for 24 hours before planting can improve germination, especially in warm conditions. This is optional but helpful.