Best Organic Fruit Tree Fertilizer (10-2-8): High Nitrogen & Potassium for Canopy Growth, Fruit Quality & Organic Orchard Management Buy on Old Cobblers Farm
Fruit trees need two things most: nitrogen for canopy health and potassium for fruit quality. This 10-2-8 delivers both at the highest concentrations in the organic lineup — 10% N for vigorous leaf canopy and 8% K for sweetness, color, firmness, and storage life in every piece of fruit.
Old Cobblers Farm™ Wicked Organics Fruit Tree Fertilizer
by Organic Fertilizer — Littleton, NH
10% Nitrogen for Canopy Health
Fruit trees need a dense, healthy leaf canopy for photosynthesis — the engine that sizes and sweetens fruit. 10% organic N sustains strong canopy growth without synthetic push.
8% Potassium for Premium Fruit
Potassium drives Brix (sugar content), red skin color, flesh firmness, and cold-storage longevity. The difference between grocery-store fruit and farm-stand quality.
Per-Tree Trunk Diameter Dosing
½–1 lb per inch of trunk diameter, broadcast under the drip line. Simple measurement-based application that scales precisely to tree size and age.
Slow-Release Through Fruit Season
Animal protein releases nitrogen through microbial activity over weeks — feeding steadily from bud break through fruit sizing without the burn risk of synthetic N.
Sulfur, Calcium & Iron
Secondary nutrients from langbeinite and natural sources support chlorophyll, cell structure, and enzyme activity. Complete tree nutrition beyond just NPK.
5–10 Trees Per Bag
One 5 lb bag feeds 5–10 medium fruit trees depending on trunk diameter. Backyard orchardists need just one or two bags per season.
All Fruit Tree Species
Apple, pear, peach, cherry, plum, apricot, nectarine, fig, persimmon — every deciduous fruit tree benefits from the high-N, high-K organic profile.
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 | 5–10 medium fruit trees per 5 lb bag |
| Category | Organic Fertilizer |
| Type | Plant-Specific 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 | ½–1 lb / inch trunk diameter |
| Method | Broadcast under drip line |
| Frequency | 1–2x per season |
| Sizes | 5, 10, 15, 20 lb bags |
| Best For | Apple, pear, peach, cherry, plum, all fruit trees — organic orchard management |
| Feature | Old Cobblers Farm™ Wicked Organics Fruit Tree Fertilizer Old Cobblers Farm | Jobe's Organics Fruit & Citrus Fertilizer Jobe's Organics | Jobe's Organics Fruit & Citrus Fertilizer Jobe's Organics | Tree-Tone Espoma | Fruit Tree Mix Down To Earth | Fruit & Nut Granular Jobe's Organics | Natural Wonder Fruit Tree Dr. Earth | Fruit & Nut Tree Food True Organic | Happy Frog Fruit & Flower FoxFarm | Fruit, Citrus & Vine Food E.B. Stone | Citrus-Tone Espoma | Fruit, Citrus & Berry G&B Organics | Citrus & Fruit Plant Food Kellogg Garden Organics |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NPK | 10-2-8 | 3-5-5 | 3-5-5 | 6-3-2 | 6-2-4 | 3-5-5 | 5-5-2 | 5-4-4 | 4-9-3 | 7-4-2 | 5-2-6 | 6-4-2 | 3-5-5 |
| Form | Granular | Granular spikes / granular | Granular spikes / granular | — | — | — | — | — | — | — | — | — | — |
| Coverage | 5–10 medium fruit trees 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 |
| Price / Size | 5 lb | 10 lb | 15 lb | 20 lb | ~$15-20 | ~$15-20 | $8 (4 lb), $28 (18 lb) | $14 (5 lb), $30 (25 lb) | $9 (4 lb), $22 (16 lb) | $9-13 (4 lb), $19 (12 lb) | $10 (4 lb), $15 (12 lb) | $19-22 (4 lb) | $10-14 (4 lb) | $14 (4 lb) | $10-15 (4 lb) | $8-11 (3.5 lb) |
| Our Take | The organic orchard formula. 10% nitrogen sustains the healthy leaf... | Broad fruit/citrus fertilizer. Not strawberry-specific. Spike format limits precision. Mild NPK. | Broad fruit/citrus fertilizer. Not strawberry-specific. Spike format limits precision. Mild NPK. | — | — | — | — | — | — | — | — | — | — |
Jobe's Organics Fruit & Citrus Fertilizer
Jobe's Organics Fruit & Citrus Fertilizer
Tree-Tone
Fruit Tree Mix
Fruit & Nut Granular
Natural Wonder Fruit Tree
Fruit & Nut Tree Food
Happy Frog Fruit & Flower
Fruit, Citrus & Vine Food
Citrus-Tone
Fruit, Citrus & Berry
Citrus & Fruit Plant Food
10% Nitrogen for Canopy Health
Fruit trees need a dense, healthy leaf canopy for photosynthesis — the engine that sizes and sweetens fruit. 10% organic N sustains strong canopy growth without synthetic push.
8% Potassium for Premium Fruit
Potassium drives Brix (sugar content), red skin color, flesh firmness, and cold-storage longevity. The difference between grocery-store fruit and farm-stand quality.
Per-Tree Trunk Diameter Dosing
½–1 lb per inch of trunk diameter, broadcast under the drip line. Simple measurement-based application that scales precisely to tree size and age.
Slow-Release Through Fruit Season
Animal protein releases nitrogen through microbial activity over weeks — feeding steadily from bud break through fruit sizing without the burn risk of synthetic N.
