Growing Tips & Guides
Expert advice for seed starting, transplanting, and growing healthy seedlings.
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PlantSphere Pot Extensions Featured on Tomato Talk Live
Our pot extensions were featured on Tomato Talk Live with Ashley Dier (147K subscribers). Watch grower Lauren demonstrate how extensions add depth without transplanting — no transplant shock, no tray reorganizing.
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Stop Up-Potting Seedlings: There's a Better Way
Up-potting wastes time and stresses seedlings. A flat of 72 takes over an hour. Learn why pot extensions are a simpler, faster alternative that keeps your 1020 tray system intact.
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Why Up-Potting Damages Roots (And What to Do Instead)
Up-potting seedlings causes transplant shock, root breakage, and days of stunted growth. Learn what really happens underground when you up-pot, and discover a simpler alternative that gives roots more room without ever lifting the plant.
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Best Soil for Starting Seeds: Complete Guide
The best soil for starting seeds is a sterile seed starting mix, not potting soil or garden soil. Seed starting mix is lightweight, well-draining, and free of pathogens that cause damping off. Look fo...
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Bottom Watering Plants: Complete Guide
Bottom watering works by placing pots in a tray of water and letting soil absorb moisture from the bottom up through drainage holes. It takes 15-30 minutes for most pots. This method prevents damping ...
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Container Size Chart for Vegetables (Complete Guide)
The minimum container sizes for vegetables are: 5 gallons for full-size tomatoes, 3 gallons for peppers and eggplant, 2 gallons for lettuce and greens, 5 gallons for cucumbers and squash, and 1 gallon...
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Damping Off: How to Prevent and Treat Seedling Disease
Damping off is a fungal disease that kills seedlings by attacking stems at soil level, causing them to collapse suddenly. Prevent it by using sterile seed starting mix, ensuring good drainage, providi...
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Grow Light Distance Chart: How Close Should Lights Be to Plants?
The optimal grow light distance is 12-24 inches for most LED panels, 2-4 inches for T5 fluorescent tubes, and 18-36 inches for HPS/MH lights. Distance varies by light intensity, plant stage, and speci...
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Grow Tents vs. Open Shelves: Which Is Better for Seed Starting?
Grow tents are better for serious seed starters who want maximum light efficiency and controlled environment. Open shelves are more affordable and flexible but waste light and offer no environmental c...
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Growing Tomatoes in Pots: Complete Container Tomato Guide
Grow tomatoes in containers by using pots at least 5 gallons (10+ gallons preferred), quality potting mix, a sunny location (6-8 hours), consistent watering, and sturdy support for the plants. Determi...
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How to Fix Leggy Seedlings (And Prevent It Next Time)
Fix leggy seedlings by moving them closer to a light source (2-4 inches from LED grow lights), increasing light duration to 14-16 hours, and adding gentle airflow with a fan. When transplanting, bury ...
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How to Fix Root Bound Plants (Step-by-Step Guide)
To fix root-bound plants, gently tease apart circling roots before transplanting to a container 1-2 sizes larger. For severely root-bound plants, make 4 vertical cuts on the root ball to encourage out...
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How to Harden Off Seedlings (Step-by-Step Guide)
Harden off seedlings by gradually exposing them to outdoor conditions over 7-10 days. Start with 1-2 hours in a shaded, protected location, then gradually increase sun exposure, temperature range, and...
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How to Prevent Transplant Shock in Seedlings
Prevent transplant shock by minimizing root disturbance, transplanting in the evening or on cloudy days, hardening off seedlings gradually over 7-10 days, and watering thoroughly before and after the ...
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How to Start Seeds Indoors: Complete Beginner's Guide
Start seeds indoors by planting in seed starting mix at the correct depth (usually 2x seed diameter), providing 14-16 hours of light, maintaining consistent moisture without overwatering, and transpla...
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Overwatering vs. Underwatering: How to Tell the Difference
The key difference between overwatering and underwatering is the soil: overwatered plants have wet soil and yellow, mushy leaves; underwatered plants have dry soil and crispy, dry leaves. Both cause w...
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Seed Starting Schedule: When to Start Seeds Indoors
Calculate your seed starting schedule by finding your last frost date and counting backwards using each crop's "weeks to transplant" timing. Tomatoes need 6-8 weeks indoors, peppers need 8-10 weeks, a...
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The Complete Guide to Bootstrap Farmer Pots (2026): Sizes, Uses & Optimization
Bootstrap Farmer has become the go-to choice for serious growers. This comprehensive guide covers every pot size, best uses, drainage tips, and how to maximize your growing space without transplanting...
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What Size Pot Do Tomato Seedlings Need? (Complete Guide)
Tomato seedlings need a 4" pot once they develop their first true leaves (typically 2-3 weeks after germination). As they grow, they'll need to move to larger containers—usually 4-6" deep pots—before ...
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When and How to Fertilize Seedlings
Fertilize seedlings only after they develop 2-4 true leaves (not the initial seed leaves). Use diluted fertilizer at 1/4 to 1/2 strength, applied weekly. Seeds contain all nutrients needed for germina...
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When to Transplant Seedlings: The Complete Timing Guide
Transplant seedlings when they have 2-4 true leaves (not the initial seed leaves), roots are visible at drainage holes, and weather conditions are appropriate for the plant type. For most vegetables, ...