02/04/2026
February gives warm-season crops the indoor head start they need to reach transplant size before last frost dates across U.S. regions. Starting these seeds now under lights or in a heated greenhouse ensures strong, well-established plants ready for spring planting when outdoor conditions allow.
- Tomatoes — start 6-8 weeks before last frost, needs 70-75°F soil and 12-14 hours of daily light for stocky seedlings
- Peppers — start 8-10 weeks before transplant time, slow germinator requiring 80°F+ warmth and strong light
- Eggplant — start 8-10 weeks indoors, heat-loving crop that needs consistent warmth and bright light from the start
- Broccoli — start 4-6 weeks before setting out, cold-hardy transplant that tolerates cooler indoor temps (60-70°F)
- Cabbage — start indoors for early spring harvests, ready to move outside when soil is workable
- Cauliflower — start 4-6 weeks before last frost, needs steady temperatures and adequate light for tight head formation
- Lettuce — start indoors for early transplants, cool-season crop that establishes quickly and handles light frost after hardening off
- Onions — start long-season varieties from seed now, slow grower needing 10-12 weeks before transplant
- Kale — start 4-6 weeks before spring planting, cold-hardy crop that transplants well from indoor starts
- Leeks — start from seed 8-10 weeks before outdoor planting, slow-growing allium that benefits from early indoor start
- Brussels Sprouts — start 4-6 weeks before last frost, long-season crop that needs early start for fall harvest
- Celery — start 10-12 weeks before transplant, very slow germinator requiring consistent moisture and warmth