Wicked Organics Organic Organic OMRI Listed

Tomato Fertilizer

NPK 5-3-4

Organic Tomato Fertilizer (5-3-4) is a premium organic blend crafted specifically for tomato growers who want nutrient-dense, flavorful, longer-lasting tomatoes grown without synthetic chemicals. This OMRI-listed formula is built on the proven 5-3-4 ratio — the same high-nutrient blend of natural ingredients that nurserymen, landscapers, and vegetable growers across New England have trusted for years — but focused on the specific needs of tomato production. The 5% nitrogen split between water-soluble and water-insoluble forms provides both immediate feeding at transplant and slow-release nutrition through microbial activity that sustains plants through the entire fruiting season. Unlike high-nitrogen synthetic fertilizers that push tomatoes into excessive leafy growth at the expense of fruit production, this organic formula's moderate nitrogen level keeps plants balanced — enough vegetative energy for a healthy canopy without diverting resources from flowering and fruiting. The 4% potassium enhances the fruit quality outcomes that tomato growers care about most: flavor, firmness, color, and shelf life. Old Cobblers Farm™ Wicked Organics Organic Tomato feeds the soil first and plants second, building the microbial ecosystem that makes nutrients available precisely when tomato plants need them.

Application Rates FAQs
Nutrient Profile
WO-ORG-TOMATO
5–3–4
Tomato Fertilizer
Derived From
  • Natural Sulfate of Potash, Phosphate Rock, Vegetable Protein Meals, Animal Protein Meals, Natural Nitrate of Soda
5-3-4
NPK Ratio
Organic
Formula Type
At planting (worked into soil), then side-dress every 4-6 weeks during the growing season. 1-2 applications total for most home gardens.
Feeding Frequency
—
Compatible Plants
What It Is

Understanding 5-3-4

Wicked Organics Organic Tomato is a 5-3-4 organic fertilizer manufactured from Natural Sulfate of Potash, Phosphate Rock, Vegetable Protein Meals, Animal Protein Meals, and Natural Nitrate of Soda. This is the same proven Pro-Gro formula used in the Wicked Organics Garden & Tomato and 5-3-4 general-purpose fertilizers — specifically positioned for tomato growers.

The guaranteed analysis: Total Nitrogen 5.0% (1.5% Water Soluble, 3.5% Water Insoluble), Available Phosphate 3.0%, Soluble Potash 4.0%. The 3.5% water-insoluble nitrogen — 70% of the total — releases gradually through microbial decomposition, providing the steady, moderate nitrogen supply that tomatoes perform best with.

Tomatoes are often over-fertilized with nitrogen, producing impressive-looking plants that disappoint at harvest with fewer, smaller, less flavorful fruits. The 5-3-4 ratio avoids this trap by matching the plant's actual nutrient demand: moderate nitrogen for canopy maintenance, phosphorus for root development and flower initiation, and potassium for fruit quality. Ash tests suggest that organically fed tomatoes have higher mineral content and lower nitrate content, making them more nutritious, better tasting, and giving them better shelf life. The density of this product is approximately 50 lbs per cubic foot.

N
Nitrogen — 5%

5.0% Total Nitrogen (1.5% Water Soluble, 3.5% Water Insoluble) — provides both immediate and slow-release nitrogen for steady vegetative growth and sustained fruit production without the excessive leafiness that high-nitrogen fertilizers cause in tomatoes.

P
Phosphorus — 3%

3.0% Available Phosphate (P2O5) — supports strong root development and early flowering, helping tomato plants establish quickly and begin setting fruit sooner.

K
Potassium — 4%

4.0% Soluble Potash (K2O) — enhances fruit size, flavor, firmness, and disease resistance, while reducing the incidence of physiological disorders like blossom end rot through improved calcium uptake.

Recommended Plants

Best For

Tomatoes
Peppers
Eggplant
Cucumbers
Squash
Melons
Beans
Small Fruit

Growing Detail

Tomatoes are the primary target — this formula matches their specific nutritional demands during the critical transition from vegetative growth to fruit production. Peppers and eggplant share the same Solanaceae family nutritional profile and respond identically. Cucumbers, squash, and melons benefit from the potassium for fruit quality and sweetness. Beans appreciate the moderate nitrogen since they fix their own N from the atmosphere. Small fruit like strawberries and raspberries thrive on the balanced organic nutrition without the salt stress that synthetic fertilizers can cause in these sensitive crops.
Dosing Guide

Application Rates

Garden Beds
2-3 lbs per 100 sq ft
Container / Pot
2-3 tbsp per gallon of soil
Water Mix
N/A — granular application
Lawn
N/A — formulated for tomato and vegetable production
Trees
N/A — formulated for garden vegetable production
Per Acre
870-1,300 lbs per acre
Frequency
Every 2-4 weeks

How to Apply

Seasonal Notes

Spring: Apply 1-2 weeks before transplanting to allow microbial activity to begin releasing nutrients. Work into soil at planting time. Summer: Side-dress every 4-6 weeks during active growth and fruiting. The slow-release formula provides sustained nutrition between applications. Fall: Not typically needed for annual tomato production. Can be applied to soil as a pre-winter amendment to build fertility for next season. Winter: No application.
How It Compares

Side by Side

This is the same proven 5-3-4 formula as the Wicked Organics Garden & Tomato and the generic 5-3-4 — all manufactured by North Country Organics in Bradford, Vermont. The relatively low analysis numbers are deceptive — when you feed the soil, the microbial chain reaction delivers results that outpace higher-analysis synthetic fertilizers. Compared to the synthetic Wicked Growth Garden & Tomato (5-10-10), the organic provides slower nutrient release but builds long-term soil health. Compared to synthetic tomato-specific blends, this organic formula delivers more sustained results at the cost of slower initial response.

Safety & Storage

Store in a dry environment. Not classified as hazardous. No special handling procedures necessary. Wear approved respirator if sensitive to dust. Wear gloves if skin sensitivities appear. Eye protection optional. Wash hands after use. Note: Manufactured in a facility that stores peanut meal and is manufactured with machinery that processes peanut meal.

Got Questions?

Frequently Asked

  • Wicked Organics Organic Tomato Fertilizer is a specialized organic formula designed specifically for tomato plants. While the Organic Garden and Tomato product is an all-purpose option for mixed vegetable gardens, the Organic Tomato formula is tailored with the specific NPK ratio and micronutrient package that tomatoes need for maximum fruit production. It provides balanced nutrition with emphasis on potassium for fruit quality, phosphorus for flowering and root strength, and calcium to help prevent blossom end rot. Old Cobblers Farm™ Wicked Organics Organic Tomato is the dedicated organic choice for serious tomato growers.
  • Organic tomato fertilizer is specifically optimized for tomato nutrition, typically with higher potassium for fruit quality and added calcium for blossom end rot prevention. Organic garden fertilizer is more balanced for a wide variety of vegetables. If you grow mostly tomatoes and peppers, the dedicated tomato formula provides more targeted nutrition. If you grow a mixed garden with many vegetable types, the garden formula offers broader versatility. Old Cobblers Farm™ offers both Wicked Organics Organic Tomato and Organic Garden and Tomato so you can choose the best match for your growing approach.
  • Yes, organic tomato fertilizer works extremely well on peppers because tomatoes and peppers are closely related (both Solanaceae family) and share nearly identical nutritional needs. Both crops need moderate nitrogen for foliage, phosphorus for flowering, and elevated potassium for fruit quality. The calcium content that helps prevent blossom end rot in tomatoes provides the same benefit for peppers, which can also suffer from this calcium-related disorder. Old Cobblers Farm™ Wicked Organics Organic Tomato Fertilizer is ideal for both tomato and pepper plants in organic gardens.
  • Apply organic tomato fertilizer at transplanting and reapply every 4–6 weeks throughout the growing season. Because organic fertilizers release nutrients slowly, they provide more sustained feeding per application compared to synthetics. For container tomatoes, feed every 3–4 weeks due to faster nutrient depletion in pots. Stop fertilizing about 4 weeks before your last expected harvest. Old Cobblers Farm™ Wicked Organics Organic Tomato Fertilizer delivers steady, season-long nutrition from natural ingredients for consistent organic tomato production.
  • Wicked Organics Organic Tomato Fertilizer is formulated from vegetable protein meals, animal protein meals, bone char, natural sulfate of potash, and nitrate of soda. Bone char provides phosphorus and calcium for root strength and blossom end rot prevention. Sulfate of potash delivers chloride-free potassium for superior fruit quality. Protein meals supply slow-release nitrogen. All ingredients are OMRI-Listed for certified organic production. Old Cobblers Farm™ uses only premium natural ingredients specifically selected for optimal tomato nutrition.
  • Many gardeners and researchers report that organically grown tomatoes develop more complex, richer flavor profiles compared to conventionally grown fruit. The slow, steady nutrient release from organic fertilizers allows tomatoes to develop sugars, acids, and volatile flavor compounds more gradually, potentially producing more balanced and nuanced flavor. The soil health improvements from organic growing also enhance micronutrient uptake, which contributes to flavor complexity. Old Cobblers Farm™ Wicked Organics Organic Tomato Fertilizer supports the conditions for growing the best-tasting organic tomatoes possible.
  • Yes, Old Cobblers Farm™ Wicked Organics Organic Tomato Fertilizer is OMRI-Listed for certified organic production. All ingredients meet the Organic Materials Review Institute's strict standards with no synthetic chemicals or prohibited substances. OMRI certification is especially meaningful for food crops like tomatoes that are consumed fresh, giving home gardeners and market growers confidence in truly organic production. Old Cobblers Farm™ Wicked Organics carries the OMRI seal across its entire organic product lineup.

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