How to Seed a Tomato:
When to Start Your Tomato Seeds?
Zones 9 & 10: Start seeds indoors in early to mid January
Zone 8: Start seeds indoors in early February
Zone 7: Start seeds indoors in mid February
Zone 6: Start seeds indoors in late February
Zone 5: Start seeds indoors in early March
Zones 1-4: Start seeds indoors in mid to late March
The USDA plant hardiness zones for U.S.
How to seed a tomato seeds indoors? 6-8 weeks before last freeze date
When to transplant tomato seedlings to the garden? 1 to 2 weeks after last spring frost
When to sow tomato seeds outdoors? After last spring frost (if your season is long)
Germination time: 6-14 days, depending on variety
Germination temperature: 70-85º F
Sowing depth: 1/4 inch
Days to maturity: 53-90 days from transplant, depending on variety
omatoes are warm-season crops best suited for USDA plant hardiness zones 3-11, depending on the variety. For best results, start tomato seeds indoors 6 to 8 weeks before your area’s last expected spring frost. Use seed trays or small pots with a quality seed-starting mix. Sow the seeds about 1/4 inch deep, and keep the soil temperature between 70°F to 85°F to encourage germination. Seeds typically sprout within 6 to 14 days.
Once seedlings develop their first true leaves and outdoor temperatures are consistently warm, transplant them to the garden 1 to 2 weeks after the last spring frost. Choose a sunny location with well-drained soil, and space plants about 18 to 24 inches apart. If you live in a region with a long growing season, you can also direct sow tomato seeds outdoors after the last spring frost, though this method is less common.
Depending on the variety, tomatoes typically take 53 to 90 days to mature after transplanting. Provide consistent watering, support with cages or stakes, and enjoy a bountiful harvest!
