Transplant Date Calculator

Summary

Enter your last frost date and pick a plant to get the exact transplant-safe date and recommended seed-start window.

How it works

1. Enter your average last spring frost date.
2. Select a plant from the list or enter a custom frost-free offset.
3. The calculator shows the safe transplant date for that plant.
4. It also counts back to give you the ideal seed-starting window.
5. Add multiple plants to build a full transplant calendar.

Use cases

• Determine when tomato and pepper seedlings can safely move outside.
• Coordinate transplant dates for a mixed vegetable and flower garden.
• Avoid transplant shock from moving frost-sensitive plants too early.
• Plan cold-hardy transplants like broccoli and cabbage before the frost-free date.
• Build a printable spring transplant calendar for the whole season.
• Stagger transplant dates to spread workload across several weekends.

Frequently Asked Questions