Best All-Purpose Organic Garden Fertilizer (5-3-4): Balanced Slow-Release Nutrition from Natural Protein Meals, Rock Phosphate & Sulfate of Potash Buy on Old Cobblers Farm
The organic equivalent of a balanced all-purpose fertilizer — but built from natural protein meals, mined minerals, and biological inputs instead of synthetic salts. 5-3-4 delivers complete, biologically-driven nutrition that feeds your soil and your plants simultaneously.
Old Cobblers Farm™ Wicked Organics 5-3-4 Fertilizer – Organic Gardening
by Organic Fertilizer — Littleton, NH
Complete Organic NPK
5% nitrogen from protein meals, 3% phosphorus from rock phosphate, 4% potassium from sulfate of potash. All three primary nutrients from natural, biologically-active sources.
Biologically-Driven Slow Release
Nutrients release as soil microbes break down the protein and mineral components. Steady, sustained feeding that follows soil temperature and biological activity — nature's timing.
Feeds Soil Biology
Protein meals in the blend are premium food for beneficial soil microbes. Every application increases microbial diversity, improves nutrient cycling, and builds soil organic matter.
Vegetable Garden Workhorse
The balanced NPK ratio handles everything from tomatoes to peppers to leafy greens to root crops. One organic formula for the entire vegetable garden — no specialty products needed.
170–250 sq ft Per Bag
At 2–3 lbs per 100 sq ft, one 5 lb bag covers a standard garden bed. Reapply monthly for continuous feeding through the growing season.
NCO Pro-Gro Base Formula
Built on North Country Organics Pro-Gro — a proven, professionally formulated organic fertilizer base used by organic farms and market gardens throughout the Northeast.
Organic Approved
All natural inputs approved for organic production. Safe for NOP-compliant gardens and farms. No synthetic chemicals, no sewage sludge, no GMO inputs.
Trusted by 20,000+ Growers
Developed in Littleton, New Hampshire. Sold nationwide on Amazon, Walmart, eBay, and theoldcobblersfarm.com.
| NPK Ratio | 5-3-4 |
| Item Form | Granular |
| Coverage | 170–250 sq ft per 5 lb bag |
| Category | Organic Fertilizer |
| Type | General Purpose Organic |
| Sizes | 5 lb | 10 lb | 15 lb | 20 lb |
| NPK | 5-3-4 |
| Nitrogen | 5% (protein meals) |
| Phosphorus | 3% (phosphate rock) |
| Potassium | 4% (sulfate of potash) |
| Form | Granular |
| Rate | 2–3 lbs / 100 sq ft |
| Method | Broadcast and incorporate or side-dress |
| Frequency | 2–3x per season |
| Sizes | 5, 10, 15, 20 lb bags |
| Best For | All vegetables, herbs, flowers — general organic garden use |
| Feature | Old Cobblers Farm™ Wicked Organics 5-3-4 Fertilizer – Organic Gardening Old Cobblers Farm | Plant-tone All Purpose Plant Food Espoma | Premium Gold All Purpose Fertilizer Dr. Earth | All Purpose Granular Fertilizer Jobe's Organics | All Purpose Mix Down To Earth | Happy Frog All-Purpose Fertilizer FoxFarm | Stonington Blend Organic Plant Food Coast of Maine | 4-6-4 Natural & Organic Plant Food Sustane | Plant-Tone Espoma | Premium Gold All Purpose Dr. Earth | All Purpose Granular Jobe's Organics | All Purpose Mix Down To Earth | Performance Organics All Purpose Granules Miracle-Gro | Stonington Blend Organic Plant Food Coast of Maine | Natural Organic All Purpose Burpee | 4-6-4 Natural & Organic Plant Food Sustane | Multi-Purpose 6-2-4 MicroLife | Organic All-Purpose SUPERthrive |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NPK | 5-3-4 | 5-3-3 | 4-4-4 | 4-4-4 | 4-6-2 | 6-4-5 | 5-2-4 | 4-6-4 | 5-3-3 | 4-4-4 | 4-4-4 | 4-6-2 | 9-2-7 | 5-2-4 | 4-4-4 | 4-6-4 | 6-2-4 | 4-4-4 |
| Form | Granular | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Coverage | 170–250 sq ft per 5 lb bag | Not listed | Not listed | Not listed | Not listed | Not listed | Not listed | Not listed | Not listed | Not listed | Not listed | Not listed | Not listed | Not listed | Not listed | Not listed | Not listed | Not listed |
| Price / Size | 5 lb | 10 lb | 15 lb | 20 lb | $10–$11 / 4 lb; $15–$16 / 8 lb | $10–$13 / 4 lb | $7–$9 / 4 lb | $15–$16 / 5 lb | $15–$20 / 4 lb | ~$19 / 4 lb | $22–$23 / 5 lb | ~$8-11 (4 lb) | ~$12-15 (4 lb) | ~$8-12 (4 lb) | ~$10-14 (5 lb) | ~$10-15 (2.5 lb) | ~$19 (4 lb) | ~$12-15 (4 lb) | ~$18-22 (5 lb) | ~$25-30 (7 lb) | ~$12-18 |
| Our Take | The all-purpose organic garden formula. 5-3-4 from natural protein ... | Sustane 4-6-4 is the exact NPK match — a compost-based professional-grade product from composted turkey litter at a premium price. The general-purpose organic category is the most crowded competitive segment. | Sustane 4-6-4 is the exact NPK match — a compost-based professional-grade product from composted turkey litter at a premium price. The general-purpose organic category is the most crowded competitive segment. | Sustane 4-6-4 is the exact NPK match — a compost-based professional-grade product from composted turkey litter at a premium price. The general-purpose organic category is the most crowded competitive segment. | Sustane 4-6-4 is the exact NPK match — a compost-based professional-grade product from composted turkey litter at a premium price. The general-purpose organic category is the most crowded competitive segment. | Sustane 4-6-4 is the exact NPK match — a compost-based professional-grade product from composted turkey litter at a premium price. The general-purpose organic category is the most crowded competitive segment. | Sustane 4-6-4 is the exact NPK match — a compost-based professional-grade product from composted turkey litter at a premium price. The general-purpose organic category is the most crowded competitive segment. | Sustane 4-6-4 is the exact NPK match — a compost-based professional-grade product from composted turkey litter at a premium price. The general-purpose organic category is the most crowded competitive segment. | — | — | — | — | — | — | — | — | — | — |
Plant-tone All Purpose Plant Food
Premium Gold All Purpose Fertilizer
All Purpose Granular Fertilizer
All Purpose Mix
Happy Frog All-Purpose Fertilizer
Stonington Blend Organic Plant Food
4-6-4 Natural & Organic Plant Food
Plant-Tone
Premium Gold All Purpose
All Purpose Granular
All Purpose Mix
Performance Organics All Purpose Granules
Stonington Blend Organic Plant Food
Natural Organic All Purpose
4-6-4 Natural & Organic Plant Food
Multi-Purpose 6-2-4
Organic All-Purpose
Complete Organic NPK
5% nitrogen from protein meals, 3% phosphorus from rock phosphate, 4% potassium from sulfate of potash. All three primary nutrients from natural, biologically-active sources.
Biologically-Driven Slow Release
Nutrients release as soil microbes break down the protein and mineral components. Steady, sustained feeding that follows soil temperature and biological activity — nature's timing.
Feeds Soil Biology
Protein meals in the blend are premium food for beneficial soil microbes. Every application increases microbial diversity, improves nutrient cycling, and builds soil organic matter.
Vegetable Garden Workhorse
The balanced NPK ratio handles everything from tomatoes to peppers to leafy greens to root crops. One organic formula for the entire vegetable garden — no specialty products needed.
