Seed Starting Calculator

Enter your last frost date and crop for indoor seed-start and transplant (or direct sow) dates—ideal for tomatoes, peppers, and more. Build a multi-crop share list for your season.

Seed Starting Schedule

Enter your estimated last spring frost (from your own records or our Frost Date Lookup), pick a crop, and get indoor start and transplant (or direct sow) dates. Use Add to share list to stack several crops into one long block for Copy & share.

Fills typical last & first frost dates for the zone (same estimates as our planting calendar).
Uses the same approximate USDA zone mapping as our other tools, then fills frost dates for that zone.
Required for spring and summer crops. Fall succession crops below use first frost instead.
Required only for fall succession crops (kale, beets, Brussels sprouts, etc.). Zone quick-fill adds this too.