Highest Organic NPK — 20% Total
Best High-Performance Organic Fertilizer (10-2-8): 20% Total NPK — The Strongest Organic Formula for Lawns, Turf & Heavy Feeders Buy on Old Cobblers Farm
The most potent organic fertilizer in the Wicked Organics lineup. 10% nitrogen and 8% potassium deliver serious feeding power from biologically-active animal protein and langbeinite. 20% total NPK closes the gap between organic and synthetic performance.
Old Cobblers Farm™ Wicked Organics 10-2-8 Fertilizer – Organic Gardening
by Organic Fertilizer — Littleton, NH
10-2-8
N-P-K Ratio
"The powerhouse of the organic lineup. 10-2-8 delivers 20% total NPK — the highest of any Wicked Organics formula. 10% slow-release nitrogen for vigorous growth and 8% potassium for stress resistance, fruit quality, and winter hardiness. Nature Safe professional quality."
10%
Nitrogen
8%
Potassium (K₂O)
20%
Total NPK
4 Sizes
5, 10, 15, 20 lbs
10% Nitrogen — Maximum Organic N
The highest nitrogen in the entire Wicked Organics catalog. 10% N from dehydrated animal protein provides the closest organic equivalent to synthetic lawn and garden fertilizers.
8% Potassium for Stress & Quality
Heavy potassium load drives drought tolerance, winter hardiness, fruit quality, and disease resistance. The N-K combination organic lawns and orchards need most.
20% Total NPK
The highest total nutrient content of any Wicked Organics product. Closes the gap with synthetic fertilizers — fewer bags, less labor, more organic nutrition per application.
Professional Turf Rates
5–10 lbs per 1,000 sq ft delivers 0.5–1.0 lb actual nitrogen per 1,000 — the professional standard for organic turf feeding programs.
Orchard & Fruit Tree Ready
High N for canopy growth plus high K for fruit quality. ½–1 lb per inch of trunk diameter broadcast under the drip line — exactly what organic orchards need.
Slow-Release Protein-Based
Animal protein releases through soil microbial activity over weeks. No salt burn, no leaching, no flush-and-crash — steady organic feeding all season.
Nature Safe Base — Organic Approved
Built on the Nature Safe platform. All inputs approved for organic production, NOP-compliant, and trusted by professional organic turf and farm operations.
Trusted by 20,000+ Growers
Developed in Littleton, New Hampshire. Sold nationwide on Amazon, Walmart, eBay, and theoldcobblersfarm.com.
| NPK Ratio | 10-2-8 |
| Item Form | Granular |
| Coverage | 170–250 sq ft (garden) | 500–1,000 sq ft (turf) per 5 lb bag |
| Category | Organic Fertilizer |
| Type | General Purpose Organic |
| Sizes | 5 lb | 10 lb | 15 lb | 20 lb |
| NPK | 10-2-8 |
| Nitrogen | 10% (animal protein) |
| Phosphorus | 2% |
| Potassium | 8% (langbeinite) |
| Secondary | Sulfur, Calcium, Iron |
| Form | Granular |
| Rate | 5–10 lbs / 1,000 sq ft (turf) or 2–3 lbs / 100 sq ft (garden) |
| Sizes | 5, 10, 15, 20 lb bags |
| Best For | Organic lawns, turf, orchards, heavy feeders — highest organic NPK |
What We Love
✓ Highest total NPK in the organic lineup (20%)
✓ 10% nitrogen — maximum organic N for serious feeding
✓ 8% potassium for stress resistance and fruit quality
✓ Professional turf rates for organic lawn programs
✓ Nature Safe base — proven professional organic platform
Worth Noting
— Animal by-product base — not for vegan-organic programs
— Low phosphorus (2%) — new plantings may need supplemental P
Buy on Old Cobblers Farm →
Available in 5 lb | 10 lb | 15 lb | 20 lb
| Feature | Old Cobblers Farm™ Wicked Organics 10-2-8 Fertilizer – Organic Gardening Old Cobblers Farm | Fruit Tree Fertilizer Down To Earth | Natural Wonder Fruit Tree Food Dr. Earth | Citrus-Tone Citrus & Avocado Tree Food Espoma | Fruit & Citrus Granular Fertilizer Jobe's Organics | Happy Frog Fruit & Flower Fertilizer FoxFarm | Long Lasting All Purpose Lawn Food Milorganite | Organic All Season Lawn Food Espoma | 10-2-8 All Season Nature Safe | Natural Lawn Food Scotts | Bio-Turf Down To Earth | Lawn Food Purely Organic | 8-2-4 Granular Sustane | Organic Lawn Fertilizer Jonathan Green | Organic Lawn Food Espoma | Classic Organic Nitrogen Milorganite | Lawn Restore II Ringer | 12-0-6 Spring Starter Sustane |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NPK | 10-2-8 | 6-2-4 | 5-5-2 | 5-2-6 | 3-5-5 | 5-8-4 | 6-4-0 | 8-0-0 | 10-2-8 | 11-2-2 | 8-3-5 | 10-0-2 | 8-2-4 | 10-0-1 | 9-0-0 | 6-4-0 | 10-0-6 | 12-0-6 |
| Form | Granular | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Coverage | 170–250 sq ft (garden) | 500–1,000 sq ft (turf) 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 | $14–$16 / 5 lb | $9 / 4 lb; $19–$26 / 12 lb | $15 / 8 lb; $23 / 27 lb | $9–$13 / 4 lb | $15–$18 / 4 lb | $24.57 / 32 lb | $22 / 14 lb | $55-70 (50 lb) | $25-35 (29 lb) | $12-16 (4 lb), $50-60 (50 lb) | $25-30 (25 lb) | $35-50 (40 lb) | $30-40 (15 lb) | $18-22 (14 lb) | $15-20 (32 lb) | $25-30 (25 lb) | $40-55 (40 lb) |
| Our Take | The powerhouse of the organic lineup. 10-2-8 delivers 20% total NPK... | Wicked Organics' **10-2-8 has significantly higher nitrogen and potassium** than any organic competitor. Most fruit tree fertilizers cluster around 3-6% N and 2-5% K. No competitor combines high N + high K in a single organic product the way the 10-2-8 does — this is a strong differentiator. | Wicked Organics' **10-2-8 has significantly higher nitrogen and potassium** than any organic competitor. Most fruit tree fertilizers cluster around 3-6% N and 2-5% K. No competitor combines high N + high K in a single organic product the way the 10-2-8 does — this is a strong differentiator. | Wicked Organics' **10-2-8 has significantly higher nitrogen and potassium** than any organic competitor. Most fruit tree fertilizers cluster around 3-6% N and 2-5% K. No competitor combines high N + high K in a single organic product the way the 10-2-8 does — this is a strong differentiator. | Wicked Organics' **10-2-8 has significantly higher nitrogen and potassium** than any organic competitor. Most fruit tree fertilizers cluster around 3-6% N and 2-5% K. No competitor combines high N + high K in a single organic product the way the 10-2-8 does — this is a strong differentiator. | Wicked Organics' **10-2-8 has significantly higher nitrogen and potassium** than any organic competitor. Most fruit tree fertilizers cluster around 3-6% N and 2-5% K. No competitor combines high N + high K in a single organic product the way the 10-2-8 does — this is a strong differentiator. | Wicked Organics' **10-2-8 has significantly higher nitrogen and potassium** than any organic competitor. Most fruit tree fertilizers cluster around 3-6% N and 2-5% K. No competitor combines high N + high K in a single organic product the way the 10-2-8 does — this is a strong differentiator. | Wicked Organics' **10-2-8 has significantly higher nitrogen and potassium** than any organic competitor. Most fruit tree fertilizers cluster around 3-6% N and 2-5% K. No competitor combines high N + high K in a single organic product the way the 10-2-8 does — this is a strong differentiator. | — | — | — | — | — | — | — | — | — | — |
The Competition
Fruit Tree Fertilizer
by Down To Earth
6-2-4
N-P-K
Price$14–$16 / 5 lb
Wicked Organics' **10-2-8 has significantly higher nitrogen and potassium** than any organic competitor. Most fruit tree fertilizers cluster around 3-6% N and 2-5% K. No competitor combines high N + high K in a single organic product the way the 10-2-8 does — this is a strong differentiator.
Natural Wonder Fruit Tree Food
by Dr. Earth
5-5-2
N-P-K
Price$9 / 4 lb; $19–$26 / 12 lb
Wicked Organics' **10-2-8 has significantly higher nitrogen and potassium** than any organic competitor. Most fruit tree fertilizers cluster around 3-6% N and 2-5% K. No competitor combines high N + high K in a single organic product the way the 10-2-8 does — this is a strong differentiator.
Citrus-Tone Citrus & Avocado Tree Food
by Espoma
5-2-6
N-P-K
Price$15 / 8 lb; $23 / 27 lb
Wicked Organics' **10-2-8 has significantly higher nitrogen and potassium** than any organic competitor. Most fruit tree fertilizers cluster around 3-6% N and 2-5% K. No competitor combines high N + high K in a single organic product the way the 10-2-8 does — this is a strong differentiator.
Fruit & Citrus Granular Fertilizer
by Jobe's Organics
3-5-5
N-P-K
Price$9–$13 / 4 lb
Wicked Organics' **10-2-8 has significantly higher nitrogen and potassium** than any organic competitor. Most fruit tree fertilizers cluster around 3-6% N and 2-5% K. No competitor combines high N + high K in a single organic product the way the 10-2-8 does — this is a strong differentiator.
Happy Frog Fruit & Flower Fertilizer
by FoxFarm
5-8-4
N-P-K
Price$15–$18 / 4 lb
Wicked Organics' **10-2-8 has significantly higher nitrogen and potassium** than any organic competitor. Most fruit tree fertilizers cluster around 3-6% N and 2-5% K. No competitor combines high N + high K in a single organic product the way the 10-2-8 does — this is a strong differentiator.
Long Lasting All Purpose Lawn Food
by Milorganite
6-4-0
N-P-K
Price$24.57 / 32 lb
Wicked Organics' **10-2-8 has significantly higher nitrogen and potassium** than any organic competitor. Most fruit tree fertilizers cluster around 3-6% N and 2-5% K. No competitor combines high N + high K in a single organic product the way the 10-2-8 does — this is a strong differentiator.
Organic All Season Lawn Food
by Espoma
8-0-0
N-P-K
Price$22 / 14 lb
Wicked Organics' **10-2-8 has significantly higher nitrogen and potassium** than any organic competitor. Most fruit tree fertilizers cluster around 3-6% N and 2-5% K. No competitor combines high N + high K in a single organic product the way the 10-2-8 does — this is a strong differentiator.
10-2-8 All Season
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
Natural Lawn Food
by Scotts
11-2-2
N-P-K
Sizes29.1 lb
Price$25-35 (29 lb)
IngredientsGround soybean meal, feather meal, blood meal
OrganicOMRI Listed
Bio-Turf
by Down To Earth
8-3-5
N-P-K
Sizes4, 6, 25, 50 lb
Price$12-16 (4 lb), $50-60 (50 lb)
IngredientsHydrolyzed feather meal, blood meal, meat meal, bone meal, langbeinite
OrganicOMRI, CDFA OIM
Lawn Food
by Purely Organic
10-0-2
N-P-K
Sizes25 lb
Price$25-30 (25 lb)
IngredientsDistillers grains, soy meal; no manure, plant-based
OrganicOMRI Listed
8-2-4 Granular
by Sustane
8-2-4
N-P-K
Sizes40, 50 lb
Price$35-50 (40 lb)
IngredientsComposted turkey litter, feather meal, sulfate of potash; 5% humic acid
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
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
Classic Organic Nitrogen
by Milorganite
6-4-0
N-P-K
Sizes32, 36 lb
Price$15-20 (32 lb)
IngredientsHeat-dried microbes (biosolids); 2.5% iron
OrganicNOP compliant
Lawn Restore II
by Ringer
10-0-6
N-P-K
Sizes25 lb
Price$25-30 (25 lb)
IngredientsSoy meal, feather meal, bone meal, muriate of potash
OrganicNot OMRI
12-0-6 Spring Starter
by Sustane
12-0-6
N-P-K
Sizes40, 50 lb
Price$40-55 (40 lb)
IngredientsComposted turkey litter, feather meal, sulfate of potash magnesia
OrganicOMRI Listed
10% Nitrogen — Maximum Organic N
The highest nitrogen in the entire Wicked Organics catalog. 10% N from dehydrated animal protein provides the closest organic equivalent to synthetic lawn and garden fertilizers.
8% Potassium for Stress & Quality
Heavy potassium load drives drought tolerance, winter hardiness, fruit quality, and disease resistance. The N-K combination organic lawns and orchards need most.
20% Total NPK
The highest total nutrient content of any Wicked Organics product. Closes the gap with synthetic fertilizers — fewer bags, less labor, more organic nutrition per application.
Professional Turf Rates
5–10 lbs per 1,000 sq ft delivers 0.5–1.0 lb actual nitrogen per 1,000 — the professional standard for organic turf feeding programs.
Common Questions
