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.
When to sow 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: 70-85ยบ F
Sowing depth: 1/4 inch
Days to maturity: 53-90 days from transplant, depending on variety