Tomato Seeds,
Brad's Atomic Grape

Start seeds indoors 6-10 weeks before the last expected frost. Transplant outdoors once the frost risk has passed and nighttime temperatures don’t drop below 50 F. In cooler climates, consider starting earlier or using row covers to extend the season. 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 1/8 inch deep in seed-starting mix. Keep the soil warm, at least 75 F F, for optimal germination. When transplanting, space plants about 24 inches apart to accommodate their vigorous growth. Staking or caging is recommended to support the vines and prevent sprawling​.

Brad's Atomic grape tomatoes need consistent watering, aiming to keep the soil evenly moist but not waterlogged. Apply a balanced fertilizer every 2-3 weeks to support growth. Pruning helps manage the plant’s size and increases airflow, which can reduce disease risk. Harvest the fruits when they have turned a deep purple or red and feel slightly soft to the touch​.

• 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.