Tomato Seeds,
Cherry Flaviola

Start seeds indoors 6–8 weeks before your last spring frost, then transplant once nighttime temperatures remain reliably above 50 F. In frost-free or mild climates, late-summer sowing may extend fall harvests. 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 into a sterile seed-starting mix, covering lightly and keeping evenly moist. Provide bottom heat or a warm environment for strong germination. Once seedlings grow true leaves, pot them up and harden off before planting deeply outdoors, burying part of the stem to encourage a robust root system.

Water consistently at the base to reduce foliar diseases and fruit cracking. Feed with organic fertilizer or compost during early development and again as flowering begins. Train plants on stakes or cages to maintain structure. Prune selectively to improve light penetration and airflow, and monitor for pests to ensure steady, abundant clusters of fruit.

• 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.