Best No-Phosphorus Fertilizer (6-0-16): High Potassium for Fruit Quality Without the P Buy on Old Cobblers Farm
When your soil already has enough phosphorus — or when you're near sensitive waterways — this zero-P formula delivers the nitrogen and potassium your crops need without adding what they don't.
Old Cobblers Farm™ Wicked Growth 6-0-16 Fertilizer – High-Yield Crops
by Conventional Fertilizer — Littleton, NH
Built for Fruit Trees & Orchards
The 6-0-16 ratio matches what apple trees, pear trees, and mature fruit-bearing plants actually need — moderate N for canopy, heavy K for fruit quality.
Zero Phosphorus — Waterway Safe
No phosphorus runoff risk. Safe for use near ponds, streams, and in municipalities with phosphorus application restrictions.
16% Potassium for Fruit Quality
Potassium drives sugar content, color development, firmness, and post-harvest storage life in apples, berries, and all fruiting crops.
Moderate Nitrogen — No Excess Growth
6% nitrogen maintains steady vegetative growth without pushing excessive shoot growth that competes with fruit production.
Flexible Coverage
Garden rate covers 170–250 sq ft. Lawn rate stretches to 625–1,000 sq ft per 5 lb bag depending on application density.
Soil-Test Driven Choice
When your soil test shows adequate or high phosphorus, this is the formula. Feed what's needed, skip what's not.
Multi-Use Beyond Orchards
Also excellent for established lawns, hayfields, and any situation where phosphorus is restricted or unnecessary.
Trusted by 20,000+ Growers
Developed in Littleton, New Hampshire. Sold nationwide on Amazon, Walmart, eBay, and theoldcobblersfarm.com.
| NPK Ratio | 6-0-16 |
| Item Form | Granular |
| Coverage | 170–250 sq ft (garden) | 625–1,000 sq ft (lawn) per 5 lb bag |
| Category | Conventional Fertilizer |
| Type | All-Purpose NPK Blends |
| Sizes | 5 lb | 10 lb | 15 lb | 20 lb |
| NPK | 6-0-16 |
| Nitrogen | 6% |
| Phosphorus | 0% |
| Potassium | 16% soluble potash |
| Form | Granular |
| Rate | 2–3 lbs / 100 sq ft (garden) |
| Method | Broadcast or side-dress |
| Sizes | 5, 10, 15, 20 lb bags |
| Best For | Fruit trees, orchards, lawns, P-restricted areas |
| Feature | Old Cobblers Farm™ Wicked Growth 6-0-16 Fertilizer – High-Yield Crops Old Cobblers Farm | 7-0-20 Stress Blend with 3% Iron Yard Mastery | Winter Survival Fall Lawn Food Jonathan Green | Turf Builder WinterGuard Fall Lawn Food Scotts | 0-0-25 High Potassium Lawn Food (Liquid) Simple Lawn Solutions | Organic Fall Winterizer Lawn Food Espoma | 15-0-15 Phosphorus-Free Lawn Food (Liquid) Simple Lawn Solutions | 24-0-11 Turf Fertilizer Lesco |
|---|---|---|---|---|---|---|---|---|
| NPK | 6-0-16 | 7-0-20 | 10-0-20 | 32-0-10 | 0-0-25 | 8-0-5 | 15-0-15 | 24-0-11 |
| Form | Granular | — | — | — | — | — | — | — |
| Coverage | 170–250 sq ft (garden) | 625–1,000 sq ft (lawn) per 5 lb bag | Not listed | Not listed | Not listed | Not listed | Not listed | Not listed | Not listed |
| Price / Size | 5 lb | 10 lb | 15 lb | 20 lb | $40–$70 | $22–$55 | $30–$58 | $17–$50 | $35–$43 | $17–$50 | $40–$57 |
| Our Take | The go-to formula for phosphorus-restricted zones and established o... | — | — | — | — | — | — | — |
7-0-20 Stress Blend with 3% Iron
Winter Survival Fall Lawn Food
Turf Builder WinterGuard Fall Lawn Food
0-0-25 High Potassium Lawn Food (Liquid)
Organic Fall Winterizer Lawn Food
15-0-15 Phosphorus-Free Lawn Food (Liquid)
24-0-11 Turf Fertilizer
Built for Fruit Trees & Orchards
The 6-0-16 ratio matches what apple trees, pear trees, and mature fruit-bearing plants actually need — moderate N for canopy, heavy K for fruit quality.
Zero Phosphorus — Waterway Safe
No phosphorus runoff risk. Safe for use near ponds, streams, and in municipalities with phosphorus application restrictions.
16% Potassium for Fruit Quality
Potassium drives sugar content, color development, firmness, and post-harvest storage life in apples, berries, and all fruiting crops.
Moderate Nitrogen — No Excess Growth
6% nitrogen maintains steady vegetative growth without pushing excessive shoot growth that competes with fruit production.
