30 Ace 55 Tomato Seeds – Heirloom Low Acid Determinate Seeds

Ace 55 is a trusted heirloom tomato variety prized for its mild, low-acid flavor and reliable performance in the garden. The determinate plants grow to a compact size and set fruit over a concentrated period, making them an excellent choice for home gardeners who want a steady harvest for fresh eating, canning, and sauces. The medium-sized red tomatoes have a classic round shape and are known for their versatility in the kitchen.

Whether you are growing in raised beds, containers, or traditional garden rows, Ace 55 adapts well to a range of settings. Its low-acid profile appeals to those who prefer a milder tomato taste, and the determinate habit means less staking and easier maintenance compared to indeterminate types. Start seeds indoors and transplant after the last frost for a productive season.

Plant Features

• Heirloom variety with a mild, low-acid flavor
• Determinate growth habit for compact, manageable plants
• Produces medium-sized red tomatoes suitable for fresh use and preserving
• Well-suited to home gardens, raised beds, and containers
• Reliable fruit set over a concentrated harvest window

Growing Information

• Botanical Name: Solanum lycopersicum
• Plant Type: Annual vegetable (determinate tomato)
• Sunlight: Full sun (6–8 hours daily)
• Soil: Well-drained, fertile soil rich in organic matter
• Water Requirements: Moderate; keep soil evenly moist
• Growth Habit: Determinate, bushy
• USDA Hardiness Zones: Grown as an annual in most zones
• Bloom Season: Summer
• Mature Height: Typically 2–3 feet for determinate types
• Germination Requirements: Start indoors 6–8 weeks before last frost; soil temperature 70–80°F
• Spacing: 18–24 inches apart

Planting & Care

Sow Ace 55 tomato seeds indoors in a sterile seed-starting mix about 6–8 weeks before your expected last frost date. Keep the medium consistently moist but not waterlogged, and provide warmth (70–80°F) for reliable germination. Once seedlings have true leaves, transplant them into larger pots and gradually acclimate them to outdoor conditions before planting in the garden after the danger of frost has passed.

Choose a sunny location with well-drained soil. Water regularly to maintain even moisture, especially during fruit development, and apply a layer of mulch to conserve moisture and suppress weeds. Determinate plants benefit from a light cage or stake for support, though they are more compact than indeterminate varieties. Fertilize according to soil test results and avoid excessive nitrogen, which can promote foliage at the expense of fruit.

What's Included

30 Ace 55 Tomato Seeds.