Best Nut Tree Fertilizer (5-5-10): Double Potassium for Shell Quality, Kernel Fill & Long-Term Tree Health Buy on Old Cobblers Farm
Old Cobblers Farm™ Wicked Growth Nut Trees Fertilizer
by Wicked Growth — Littleton, NH
Double Potassium for Nut Quality
10% K — double the nitrogen and phosphorus percentage. Potassium is the #1 nutrient for shell hardness, kernel fill, oil content, and overall nut grade quality.
Per-Tree Application
1 cup for newly planted trees, 2–6 cups for established specimens scaled by trunk diameter. Broadcast under the drip line and let rain carry it to the root zone.
Low Nitrogen — No Excess Shoot Growth
5% nitrogen provides just enough for healthy canopy maintenance without triggering excessive shoot growth that steals energy from nut production and increases pruning labor.
Multiple Trees Per Bag
One 5 lb bag feeds 2–5 established nut trees or 11 new plantings per application. Scale up with larger bags for orchards.
Improves Nut Storage & Shelf Life
Adequate potassium reduces kernel rancidity by improving oil stability and moisture regulation in harvested nuts. Better K = longer shelf life after drying.
Spring + Mid-Summer
Feed in early spring as buds break and again in mid-summer during nut sizing. Two applications aligned to the nut development calendar.
All Nut Species
Pecans, walnuts, almonds, hazelnuts, chestnuts, hickory, macadamia, pistachio, and butternut — every nut tree benefits from K-heavy nutrition.
Trusted by 20,000+ Growers
Developed in Littleton, New Hampshire. Sold nationwide on Amazon, Walmart, eBay, and theoldcobblersfarm.com.
| NPK Ratio | 5-5-10 |
| Derived From | Urea, Diammonium Phosphate, Muriate of Potash, Silicon Dioxide |
| Item Form | Granular |
| Release Speed | Moderate-release |
| Application Rate | 1 cup / new tree | 2–6 cups / established tree (by trunk size) |
| Method | Broadcast under drip line |
| Frequency | 1–2x per season (spring + mid-summer) |
| Sizes | 5 lb | 10 lb | 15 lb | 20 lb |
| Supports | Pecan, walnut, almond, hazelnut, chestnut, hickory, macadamia, pistachio, butternut |
| Setups | Orchards, backyard nut trees, containers (young trees), agroforestry plantings |
| Feature | Old Cobblers Farm™ Wicked Growth Nut Trees Fertilizer | Fruit & Nut Fertilizer | Fruit & Citrus Spikes | Tree-Tone Organic | Tree & Shrub Spikes | Nut and Berry Tree Food | Natural Wonder Fruit Tree | Citrus & Fruit Tree | Fruit Tree Mix | Flowers & Fruit Organic | Fruit Tree Booster |
|---|---|---|---|---|---|---|---|---|---|---|---|
| NPK | 5-5-10 | 4-4-2004 | 15-5-10 | 6-3-2002 | 15-7-12 | 13-7-3 | 5-5-2002 | 8-4-2002 | 6-2-2004 | 3-3-2005 | Liquid |
| Phosphorus | 5.0% | 4.0% | 5.0% | 3.0% | 7.0% | 7.0% | 5.0% | 4.0% | 2.0% | 3.0% | 0.0% |
| Potassium | 10.0% | 4.0% | 10.0% | 2.0% | 12.0% | 3.0% | 2.0% | 2.0% | 4.0% | 5.0% | 0.0% |
| Form | Granular | ||||||||||
| Sizes | 5 lb | 10 lb | 15 lb | 20 lb | 4 lb | 12 count | 36 lb | 12 count | 5 lb | 12 lb | 12 lb | 15 lb | 32 oz | 32 oz |
| Release Speed | Moderate-release |
Fruit & Nut Fertilizer
Fruit & Citrus Spikes
Tree-Tone Organic
Tree & Shrub Spikes
Nut and Berry Tree Food
Natural Wonder Fruit Tree
Citrus & Fruit Tree
Fruit Tree Mix
Flowers & Fruit Organic
Fruit Tree Booster
Double Potassium for Nut Quality
10% K — double the nitrogen and phosphorus percentage. Potassium is the #1 nutrient for shell hardness, kernel fill, oil content, and overall nut grade quality.
Per-Tree Application
1 cup for newly planted trees, 2–6 cups for established specimens scaled by trunk diameter. Broadcast under the drip line and let rain carry it to the root zone.
Low Nitrogen — No Excess Shoot Growth
5% nitrogen provides just enough for healthy canopy maintenance without triggering excessive shoot growth that steals energy from nut production and increases pruning labor.
Multiple Trees Per Bag
One 5 lb bag feeds 2–5 established nut trees or 11 new plantings per application. Scale up with larger bags for orchards.
