Highest Organic NPK — Nature Safe Base
Best High-Nitrogen Organic Fertilizer (8-3-5): Professional-Grade Slow Release with Sulfur, Magnesium & Calcium from Nature Safe Buy on Old Cobblers Farm
When organic gardens need serious nitrogen, 8-3-5 delivers. The highest total NPK in the Wicked Organics blended line — 16% total nutrients from dehydrated animal protein and langbeinite. Built on the Nature Safe platform trusted by professional turf managers and organic farms.
Old Cobblers Farm™ Wicked Organics 8-3-5 Fertilizer – Organic Gardening
by Organic Fertilizer — Littleton, NH
8-3-5
N-P-K Ratio
"The professional organic formula with the highest NPK in the Wicked Organics blended lineup. 8% nitrogen from dehydrated animal protein releases slowly through microbial activity, while langbeinite adds sulfur, magnesium, and potassium. Nature Safe quality in a consumer bag."
8%
Nitrogen
16%
Total NPK
S+Mg+Ca
Secondary Nutrients
4 Sizes
5, 10, 15, 20 lbs
8% Nitrogen — Highest Organic Blend
The highest nitrogen in the Wicked Organics blended line. 8% N from dehydrated animal protein provides more feeding power per pound than 5-3-4 or 4-6-4 formulas.
S, Mg & Ca from Langbeinite
Potassium magnesium sulfate (langbeinite) delivers three secondary nutrients in every granule — sulfur for protein synthesis, magnesium for chlorophyll, and calcium for cell walls.
Nature Safe Professional Base
Built on the Nature Safe platform used by golf course superintendents, professional turf managers, and certified organic farms. Professional-grade formulation in consumer packaging.
Biologically-Driven Slow Release
Animal protein breaks down through soil microbial activity — releasing nitrogen gradually over weeks. No surge-and-crash, no burn risk, steady organic feeding.
Turf & Garden Dual Use
Turf rates at 6.25–12.5 lbs per 1,000 sq ft for lawns. Garden rates at 2–3 lbs per 100 sq ft for beds. One formula, two application programs.
16% Total NPK
The highest total nutrient content of any Wicked Organics blend. More nutrition per pound means less product to apply and better value per bag.
Organic Approved
All inputs approved for organic production. OMRI-compatible for NOP-compliant farms, gardens, and turf programs.
Trusted by 20,000+ Growers
Developed in Littleton, New Hampshire. Sold nationwide on Amazon, Walmart, eBay, and theoldcobblersfarm.com.
| NPK Ratio | 8-3-5 |
| Item Form | Granular |
| Coverage | 170–250 sq ft (garden) per 5 lb bag |
| Category | Organic Fertilizer |
| Type | General Purpose Organic |
| Sizes | 5 lb | 10 lb | 15 lb | 20 lb |
| NPK | 8-3-5 |
| Nitrogen | 8% (animal protein) |
| Phosphorus | 3% |
| Potassium | 5% (langbeinite) |
| Secondary | Sulfur, Magnesium, Calcium |
| Form | Granular |
| Rate | 2–3 lbs / 100 sq ft (garden) or 6–12 lbs / 1,000 sq ft (turf) |
| Sizes | 5, 10, 15, 20 lb bags |
| Best For | Organic lawns, turf, heavy-feeding vegetables, professional organic programs |
What We Love
✓ Highest nitrogen in the organic blended line (8%)
✓ Nature Safe professional base — trusted by turf managers
✓ Built-in sulfur, magnesium, and calcium from langbeinite
✓ Dual turf and garden application programs
✓ 16% total NPK — highest nutrient density in organic blends
Worth Noting
— Animal by-product base — not suitable for vegan-organic programs
— Higher application rate needed vs. synthetic equivalents
Buy on Old Cobblers Farm →
Available in 5 lb | 10 lb | 15 lb | 20 lb
| Feature | Old Cobblers Farm™ Wicked Organics 8-3-5 Fertilizer – Organic Gardening Old Cobblers Farm | Bio-Turf Lawn Food Down To Earth | Garden-tone Herb & Vegetable Food Espoma | Home Grown Tomato, Vegetable & Herb Food Dr. Earth | Long Lasting All Purpose Lawn Food Milorganite | 8-2-4 All-Natural Lawn & Landscape Plant Food Sustane | Fish & Seaweed Blend Fertilizer (liquid) Neptune's Harvest | Summer Revitalizer / All Season Lawn Food Espoma | Bio-Turf Down To Earth | 10-2-8 All Season Fertilizer Nature Safe | Organic Lawn Food Espoma | Natural Lawn Food Scotts | Classic Organic Nitrogen Milorganite | 8-2-4 Organic Fertilizer Sustane | Lawn Food Purely Organic | Organic Lawn Fertilizer Jonathan Green | Organic 100 Richlawn | Lawn Restore II Ringer |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NPK | 8-3-5 | 8-3-5 | 3-4-4 | 4-6-3 | 6-4-0 | 8-2-4 | 2-3-1 | 8-0-0 | 8-3-5 | 10-2-8 | 9-0-0 | 11-2-2 | 6-4-0 | 8-2-4 | 10-0-2 | 10-0-1 | 5-3-2 | 10-0-6 |
| Form | Granular | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Coverage | 170–250 sq ft (garden) 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–$12 / 4 lb | $8–$10 / 4 lb; $13 / 8 lb | $8–$12 / 4 lb | $20–$25 / 32 lb | $22–$23 / 5 lb | $18 / 36 oz; $35–$40 / gal | $25–$30 / 30 lb | $12-16 (4 lb), $28 (25 lb) | $55-70 (50 lb) | $18-22 (14 lb) | $25-35 (29 lb) | $15-20 (32 lb) | $30-45 (40 lb) | $25-30 (25 lb) | $30-40 (15 lb) | $18-25 (40 lb) | $25-30 (25 lb) |
| Our Take | The professional organic formula with the highest NPK in the Wicked... | **DTE Bio-Turf has the identical 8-3-5 NPK** and is the single most direct competitor. No competitor fully replicates Wicked Organics' dual positioning as both a turf stress product AND herb fertilizer with Ca/Mg/S. Milorganite dominates organic lawn care by volume but has 0% potassium. | **DTE Bio-Turf has the identical 8-3-5 NPK** and is the single most direct competitor. No competitor fully replicates Wicked Organics' dual positioning as both a turf stress product AND herb fertilizer with Ca/Mg/S. Milorganite dominates organic lawn care by volume but has 0% potassium. | **DTE Bio-Turf has the identical 8-3-5 NPK** and is the single most direct competitor. No competitor fully replicates Wicked Organics' dual positioning as both a turf stress product AND herb fertilizer with Ca/Mg/S. Milorganite dominates organic lawn care by volume but has 0% potassium. | **DTE Bio-Turf has the identical 8-3-5 NPK** and is the single most direct competitor. No competitor fully replicates Wicked Organics' dual positioning as both a turf stress product AND herb fertilizer with Ca/Mg/S. Milorganite dominates organic lawn care by volume but has 0% potassium. | **DTE Bio-Turf has the identical 8-3-5 NPK** and is the single most direct competitor. No competitor fully replicates Wicked Organics' dual positioning as both a turf stress product AND herb fertilizer with Ca/Mg/S. Milorganite dominates organic lawn care by volume but has 0% potassium. | **DTE Bio-Turf has the identical 8-3-5 NPK** and is the single most direct competitor. No competitor fully replicates Wicked Organics' dual positioning as both a turf stress product AND herb fertilizer with Ca/Mg/S. Milorganite dominates organic lawn care by volume but has 0% potassium. | **DTE Bio-Turf has the identical 8-3-5 NPK** and is the single most direct competitor. No competitor fully replicates Wicked Organics' dual positioning as both a turf stress product AND herb fertilizer with Ca/Mg/S. Milorganite dominates organic lawn care by volume but has 0% potassium. | — | — | — | — | — | — | — | — | — | — |
The Competition
Bio-Turf Lawn Food
by Down To Earth
8-3-5
N-P-K
Price$10–$12 / 4 lb
**DTE Bio-Turf has the identical 8-3-5 NPK** and is the single most direct competitor. No competitor fully replicates Wicked Organics' dual positioning as both a turf stress product AND herb fertilizer with Ca/Mg/S. Milorganite dominates organic lawn care by volume but has 0% potassium.
Garden-tone Herb & Vegetable Food
by Espoma
3-4-4
N-P-K
Price$8–$10 / 4 lb; $13 / 8 lb
**DTE Bio-Turf has the identical 8-3-5 NPK** and is the single most direct competitor. No competitor fully replicates Wicked Organics' dual positioning as both a turf stress product AND herb fertilizer with Ca/Mg/S. Milorganite dominates organic lawn care by volume but has 0% potassium.
Home Grown Tomato, Vegetable & Herb Food
by Dr. Earth
4-6-3
N-P-K
Price$8–$12 / 4 lb
**DTE Bio-Turf has the identical 8-3-5 NPK** and is the single most direct competitor. No competitor fully replicates Wicked Organics' dual positioning as both a turf stress product AND herb fertilizer with Ca/Mg/S. Milorganite dominates organic lawn care by volume but has 0% potassium.
Long Lasting All Purpose Lawn Food
by Milorganite
6-4-0
N-P-K
Price$20–$25 / 32 lb
**DTE Bio-Turf has the identical 8-3-5 NPK** and is the single most direct competitor. No competitor fully replicates Wicked Organics' dual positioning as both a turf stress product AND herb fertilizer with Ca/Mg/S. Milorganite dominates organic lawn care by volume but has 0% potassium.
8-2-4 All-Natural Lawn & Landscape Plant Food
by Sustane
8-2-4
N-P-K
Price$22–$23 / 5 lb
**DTE Bio-Turf has the identical 8-3-5 NPK** and is the single most direct competitor. No competitor fully replicates Wicked Organics' dual positioning as both a turf stress product AND herb fertilizer with Ca/Mg/S. Milorganite dominates organic lawn care by volume but has 0% potassium.
Fish & Seaweed Blend Fertilizer (liquid)
by Neptune's Harvest
2-3-1
N-P-K
Price$18 / 36 oz; $35–$40 / gal
**DTE Bio-Turf has the identical 8-3-5 NPK** and is the single most direct competitor. No competitor fully replicates Wicked Organics' dual positioning as both a turf stress product AND herb fertilizer with Ca/Mg/S. Milorganite dominates organic lawn care by volume but has 0% potassium.
Summer Revitalizer / All Season Lawn Food
by Espoma
8-0-0
N-P-K
Price$25–$30 / 30 lb
**DTE Bio-Turf has the identical 8-3-5 NPK** and is the single most direct competitor. No competitor fully replicates Wicked Organics' dual positioning as both a turf stress product AND herb fertilizer with Ca/Mg/S. Milorganite dominates organic lawn care by volume but has 0% potassium.
Bio-Turf
by Down To Earth
8-3-5
N-P-K
Sizes4, 6, 25, 50 lb
Price$12-16 (4 lb), $28 (25 lb)
IngredientsHydrolyzed feather meal, blood meal, meat meal, bone meal, langbeinite
OrganicOMRI, CDFA OIM
10-2-8 All Season Fertilizer
by Nature Safe
10-2-8
N-P-K
Sizes50 lb
Price$55-70 (50 lb)
IngredientsMeat meal, bone meal, blood meal, feather meal, sulfate of potash; homogeneous granule
OrganicOMRI Listed
Organic Lawn Food
by Espoma
9-0-0
N-P-K
Sizes14, 28 lb
Price$18-22 (14 lb)
IngredientsFeather meal, poultry manure, gypsum; Bio-tone microbes
OrganicOIM Registered
Natural Lawn Food
by Scotts
11-2-2
N-P-K
Sizes29.1 lb (4,000 sq ft)
Price$25-35 (29 lb)
IngredientsGround soybean meal, feather meal, blood meal
OrganicOMRI Listed
Classic Organic Nitrogen
by Milorganite
6-4-0
N-P-K
Sizes32, 36 lb
Price$15-20 (32 lb)
IngredientsHeat-dried microbes from Milwaukee wastewater; iron 2.5%
OrganicNOP compliant (biosolids)
8-2-4 Organic Fertilizer
by Sustane
8-2-4
N-P-K
Sizes20, 40, 50 lb
Price$30-45 (40 lb)
IngredientsAerobically composted turkey litter, feather meal, sulfate of potash; humic acid
OrganicOMRI Listed
Lawn Food
by Purely Organic
10-0-2
N-P-K
Sizes25 lb
Price$25-30 (25 lb)
IngredientsDistillers grains, soy meal; plant-based, no manure or biosolids
OrganicOMRI Listed
Organic Lawn Fertilizer
by Jonathan Green
10-0-1
N-P-K
Sizes15, 50 lb
Price$30-40 (15 lb)
IngredientsPlant-derived amino acids, soy protein, corn gluten meal, sulfate of potash
OrganicOMRI Listed
Organic 100
by Richlawn
5-3-2
N-P-K
Sizes40 lb
Price$18-25 (40 lb)
IngredientsAerobically composted poultry litter, feather meal
OrganicOMRI Listed
Lawn Restore II
by Ringer
10-0-6
N-P-K
Sizes25 lb (5,000 sq ft)
Price$25-30 (25 lb)
IngredientsSoy meal, feather meal, bone meal, muriate of potash
OrganicNot OMRI (contains MOP)
8% Nitrogen — Highest Organic Blend
The highest nitrogen in the Wicked Organics blended line. 8% N from dehydrated animal protein provides more feeding power per pound than 5-3-4 or 4-6-4 formulas.
S, Mg & Ca from Langbeinite
Potassium magnesium sulfate (langbeinite) delivers three secondary nutrients in every granule — sulfur for protein synthesis, magnesium for chlorophyll, and calcium for cell walls.
Nature Safe Professional Base
Built on the Nature Safe platform used by golf course superintendents, professional turf managers, and certified organic farms. Professional-grade formulation in consumer packaging.
Biologically-Driven Slow Release
Animal protein breaks down through soil microbial activity — releasing nitrogen gradually over weeks. No surge-and-crash, no burn risk, steady organic feeding.
Common Questions
