Tomatoes
Expert guides on every fertilizer we carry, step-by-step crop growing instructions, and the science behind healthy soil.

Crop Overview
Tomatoes are heavy feeders that require a carefully balanced fertilization program to produce abundant, flavorful fruit. Unlike many garden vegetables, tomatoes have distinct nutritional needs at each growth stage — demanding more nitrogen early for foliage development, then shifting to phosphorus and potassium as they flower and set fruit. Proper fertilization directly impacts fruit size, flavor intensity, disease resistance, and overall yield. Under-fertilized tomato plants produce smaller, less flavorful fruit and become more susceptible to blossom end rot, early blight, and other common problems. Over-fertilization, particularly with nitrogen, leads to lush green plants that produce few tomatoes — a frustrating outcome for gardeners who assume more fertilizer means more fruit. The key is matching nutrient delivery to each growth phase. Soil pH is equally critical; tomatoes prefer slightly acidic conditions between 6.0 and 6.8, where nutrient uptake is optimized. A soil test before planting reveals exactly what amendments are needed, preventing both deficiency and excess. Whether growing determinate varieties in containers or sprawling indeterminate plants in raised beds, a disciplined fertilization schedule is the single biggest factor separating average harvests from exceptional ones.
How to Apply ?
Seedling
Use a diluted half-strength balanced fertilizer or phosphorus-heavy starter (e.g., 5-10-5) at transplant to encourage strong root establishment without burning tender roots.
Vegetative
Apply a balanced NPK fertilizer with a slight nitrogen emphasis every 2-3 weeks to support rapid stem elongation, leaf canopy development, and overall plant structure before flowering begins.
Flowering
Reduce nitrogen and switch to a phosphorus- and potassium-rich formula (such as 5-10-10) to promote prolific bloom set and prevent the excessive foliage growth that diverts energy from flower production.
Fruiting
Maintain steady potassium feeding to improve fruit quality, sweetness, and disease resistance; side-dress with calcium-rich amendments to prevent blossom end rot during rapid fruit expansion.
Common Mistakes
Over-applying nitrogen which produces lush foliage but few tomatoes|Neglecting calcium supplementation leading to blossom end rot|Fertilizing on a calendar rather than reading plant cues and soil test results|Applying granular fertilizer directly against the stem causing root burn|Stopping fertilization too early in the season when indeterminate varieties are still producing
Organic Options
Wicked Organics Tomato Blend provides slow-release nutrition from bone meal, feather meal, and sulfate of potash. Supplement with compost tea every 2-3 weeks during fruiting and fish emulsion during early vegetative growth for a complete organic program.
Nutrient Deficiency Signs
Nitrogen
Older lower leaves turn uniformly pale yellow-green starting from the leaf tips, plant growth slows dramatically, stems become thin and spindly, and overall fruit set is poor.
Phosphorus
Leaves develop a dark green to purplish discoloration on the undersides and stems, seedlings appear stunted, root development is weak, and flowering is delayed or sparse.
Potassium
Leaf margins on older leaves turn brown and crispy (marginal scorch), fruit ripens unevenly with yellow shoulders, and plants show increased susceptibility to early blight and other diseases.
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