When to Plant in Spring:
- Earliest Planting Date: 2 weeks after Average Last Frost
- Latest Planting Date: 5 weeks after Average Last Frost
- Length of Planting Window: 3 weeks
- To find your Average First or Last Frost, click here and type in your zip code.
Planting: Plant seeds 1/8 inch deep in rows spaced 18-24 inches apart. Thin plants to stand 12-18 inches apart.