Tomato Seeds,
Martino's Roma

Start seeds indoors 6-10 weeks before the last expected frost date in your area. Transplant outdoors once the danger of frost has passed and the temperature consistently stays above 60 F. In shorter growing seasons, consider using black plastic mulch or row covers to warm the soil and protect young plants. If you’re not sure how to find your first and last frost dates, consult our blog post "Our Experts Answer Questions, Share Resources."

Sow seeds indoors 1/8 inch deep in a sterile seed-starting mix. Maintain a soil temperature of 70-80 F for optimal germination. Harden off seedlings by gradually exposing them to outdoor conditions over 7-10 days before transplanting. Space plants about 24 inches apart. Plant seedlings slightly deeper than they were in their pots to encourage a strong root system.

Apply a balanced, slow-release fertilizer at planting and side-dress with compost or fertilizer every few weeks during the growing season. Water often but avoid waterlogging, which can lead to root rot. Prune any lower leaves that touch the soil to reduce the risk of disease, though extensive pruning is unnecessary for this determinate variety.

• Most tomatoes are self-pollinating and don't frequently cross; in a garden setting, separating by 25 feet should prevent 99% of cross-pollination. Or you can bag and hand pollinate for 100% purity.
• On a small scale, seeds may be scooped from the fruits and dried on a paper towel.
• For larger quantities or cleaner seeds, fermentation for a few days is recommended.
• Once dry, tomato seed can be stored in a cool, dry, dark place; good seed retains viability for 5 years or more.