Seed Starting Date Calculator

Starting seeds at the wrong time is a common beginner gardening mistake, since the right timing depends on your specific frost date.

Enter your area's expected last frost date and how many weeks before frost a seed needs to start, and get the exact start date.

Calculate multiple plants at once by adjusting the weeks-before-frost value for each one.

See the result clearly as an actual calendar date, not just a vague 'a few weeks before' guess.

Update your frost date anytime as you get a more accurate estimate for your specific area.

A small, exact calculator for a timing decision that affects a whole season's garden.