When to Start Seeds for February 28 Last Frost (4 Weeks)?
With a February 28 last frost and 4 weeks lead, you should start seeds indoors around February 1.
How to use this tool
- Enter your average last spring frost date.
- Enter the number of weeks before transplanting to start seeds indoors (from the seed packet).
- The calculator returns the date you should sow seeds indoors.
Mild Zone 8 climates have early last-frost dates — use this to find your seed-starting date for a late-February frost.
Frequently asked questions
- When should I start seeds indoors?
- Most vegetables should be started 6–10 weeks before your last frost date. Tomatoes and peppers need 8–10 weeks; broccoli and cabbage need 4–6 weeks. Always check the seed packet.
- How do I find my last frost date?
- Enter your zip code on the USDA Plant Hardiness Zone Map website or ask your local cooperative extension service for the average last frost date in your area.