- 10 Tips for Growing Heirloom Tomatoes
- Webinar Slide Deck | Tomatoes: 10 Unsung Heroes | 34-pp PDF
- Common Tomato Pests, Diseases & Physiological Disorders | An Overview of Biotic & Abiotic Problems
- French Heritage Tomato Varieties | The Best of the Old World Marries the New
- Grafted Tomato Plants | Key Growing Information
- Greenhouse Tomatoes | Key Growing Information
- Grow a Rainbow Mix of Cherry Tomatoes
- 'Maxifort' Rootstock Tomato Germination | Tech Sheet (PDF)
- Open-Pollinated Revival Project: 3 Improved OP Heirloom & Heritage Tomatoes
- Open-Pollinated Tomato Project | Sampling Survey Questions (PDF)
- Johnny's Hosts Tomato Growers' Roundtable | Press Release
- Rootstock Tomatoes | Key Growing Information
- Determinate Tomato Varieties | Comparison Chart (PDF)
- Greenhouse Tomato Varieties | Comparison Chart (PDF)
- Greenhouse Tomato Pruning & String Trellising | Tech Sheet (PDF)
- Heirloom Tomato Varieties | Comparison Chart (PDF)
- Indeterminate Tomato Varieties | Comparison Chart (PDF)
- Tomatoes | Key Growing Information
- Paste, Plum & Roma Tomato Varieties | Comparison Chart (PDF)
- Basket-weave Trellising Instructions for Tomato & Pepper Plants | Tech Sheet (PDF)
- Side-Grafting Tomatoes | Advantages, Materials, Technique | Tech Sheet (PDF)
- Top-Grafting Tomatoes | Advantages, Materials, Technique | Tech Sheet (PDF)
- Tomato Production Challenges & Issues | Tech Sheet (PDF)
- Trellising & Crop Support Systems for Tomatoes | Stake & Basket-weave, Stake & Hanging String/Wire, Lower & Lean
- Video: Tomato Top-Grafting Demo: Splice Grafting & Cleft Grafting • Materials & Technique
- Video: An Intro to the Fundamentals of Tomato Grafting Success | Johnny's Webinar Series
- Video: How to Grow Cherry Tomatoes • From Seed to Harvest
- Video: Artisan Tomatoes™ | from Johnny's Selected Seeds
- Video: How to Prune Greenhouse Tomatoes
- Video: 'Cherry Bomb' | JSS-Bred Organic Cherry x Grape Tomato from Johnny's
- Video: 'Clementine' | The Tangerine-Colored, Organic Cocktail Tomato from Johnny's Breeding Team
- Video: Tomatoes: 10 Unsung Heroes | Johnny's Webinar Series
- Video: How to Control Tomato [and Tobacco] Hornworms
- Video: How to Identify Late Blight on Tomatoes
- Video: How to Manage Late Blight on Tomatoes (Phytophthora infestans)
- Video: How We Process Our 'Washington Cherry' Tomato Seed
- Video: How to Prune Tomatoes
- Video: How to Graft Greenhouse Tomatoes
- Tomatoes: 10 Unsung Heroes | Johnny's Educational Webinar Resources
- Video: Growing Tomatoes in Containers with Niki Jabbour & Johnny's
- Late-Summer Recipe Preview with Farmer-Chef Frank Giglio | Three Lily Farm, Thorndike, Maine
- Video: Choosing & Growing Paste Tomatoes for Sauce-Making • with Niki Jabbour
- Video: 'Hot Streak' : The Vibrant New Striped Tomato | Exclusively from Johnny's
- Video: High-Value Crops & Varieties for Your Garden • Tutorial with Niki Jabbour
- Tomato Variety Trends: How Breeding Influences Your Seed Selection | Johnny's Educational Webinar Resources
- Video: 'Mochi' : The Gumdrop-like Cherry Tomato | Exclusively from Johnny's
- Video: Tomato Pruning 101 • Tutorial with Niki Jabbour
- Tomato Innovation: Breeding & Trialing for Your Finest Harvest
- Fundamentals of Tomato Grafting | Johnny's Educational Webinar Resources
- Webinar Slide Deck | Fundamentals of Tomato Grafting | 15-pp PDF
- Top-10 Field Tomatoes for the Tunnel | What to Look for, Plant Habits & Recommendations
- Tomato Innovation: Breeding & Trialing for Your Finest Harvest
- Webinar Slide Deck | Tomato Variety Trends: How Breeding Influences Your Seed Selection | 29-pp PDF
- Video: Tomato Variety Trends: How Breeding Influences Your Seed Selection | Johnny's Webinar Series
- 3 Ways to Choose the Best Tomato Varieties | Johnny's Selected Seeds
Greenhouse Tomatoes - Key Growing Information
CULTURE: Tomatoes thrive in a tunnel or greenhouse environment, which increases your control over fruit quality and extends the harvest season, both early and late. Growing info is similar to field tomatoes, but transplants are typically started earlier and may need additional development time (6–7 weeks) and supplemental lighting to maintain strong seedlings.
TRANSPLANTING INDOORS: Provide 4–6 sq.ft. growing area per leader depending on variety, climate, disease pressure, and pruning methods. Plant deeply like field tomatoes unless grafted, in which case, plant with union above soil. For 5–7 days after transplanting, maintain 73–77°F (23–25°C) day and night temperature to promote rapid foliar and root growth. At fruit set, lower night temps to 62–66°F (17–19°C) and begin monitoring plants to manage them towards season-long productivity.
TRELLISING/PRUNING: Train plants to 1–2 branchless leaders onto separate vertical strings with trellis clips roughly 1" below every third leaf. Keep taut and reuse bottom clips, keeping at least 3–4 per string. Consider a lower-and-lean system if you have a long season, capable structure, and enough labor. Pruning leaves and clusters can help to manage diseases and steer towards maximum production. Keep grafted plants free from scion roots and rootstock suckers.
DISEASES & INSECT PESTS: A slightly different set of pests attack indoor crops than outdoor crops, but similar management strategies apply. The use of beneficial insects and grafting is generally more successful in tunnels/greenhouses than open field.
HARVEST/STORAGE: Same as field, plus potential for truss harvesting.
DAYS TO MATURITY: From transplanting.
TRANSPLANTS: Avg. 950 plants/1,000 seeds.
SEED SPECS: Avg. 11,000–13,000 seeds/oz.
PACKET: 15 seeds, plants about 20 feet.