Best Cover Crop Fertilizer (10-10-10): Balanced Nutrition for Fast Establishment & Maximum Biomass Buy on Old Cobblers Farm
Old Cobblers Farm™ Wicked Growth Cover Crops Fertilizer
by Wicked Growth — Littleton, NH
Fast Establishment
Balanced NPK at seeding gives cover crop seedlings the nutrition they need to germinate quickly and close canopy before weeds can compete. Speed matters with cover crops.
Maximum Biomass Production
10% nitrogen fuels the leafy biomass that protects soil from erosion, suppresses weeds, and becomes green manure when you terminate the cover crop in spring.
Root Development for Soil Building
10% phosphorus supports the deep root growth that breaks compaction, creates soil pores, and feeds soil biology — the whole point of planting cover crops.
Go Light on N-Fixing Covers
Clover, vetch, and other legume covers fix their own nitrogen. Use the lighter rate (1 lb / 100 sq ft) for legume mixes to avoid suppressing nodule activity.
250–500 sq ft Per Bag
At the light rate for legumes, one bag covers 500 sq ft. At the standard rate for grasses and brassicas, covers 250 sq ft.
One Application at Seeding
Broadcast and lightly incorporate before seeding. Most cover crops need only this single application — they're bred to thrive in modest fertility conditions.
All Cover Crop Species
Winter rye, clover, vetch, buckwheat, oats, radish, brassica mixes — works for every cover crop species and blend in your rotation.
Trusted by 20,000+ Growers
Developed in Littleton, New Hampshire. Sold nationwide on Amazon, Walmart, eBay, and theoldcobblersfarm.com.
| NPK Ratio | 10-10-10 |
| Derived From | Urea (10–20%), Diammonium Phosphate (10–20%), Potassium Chloride / Muriate of Potash (40–50%), Silicon Dioxide (4–53%) |
| Item Form | Granular |
| Release Speed | Moderate-release |
| Application Rate | 1–2 lbs / 100 sq ft (broadcast before seeding) |
| Method | Broadcast and lightly incorporate before seeding |
| Frequency | 1x at seeding (optional 1x mid-season for non-legume covers) |
| Sizes | 5 lb | 10 lb | 15 lb | 20 lb |
| Supports | Winter rye, crimson clover, white clover, red clover, hairy vetch, buckwheat, oats, radish, brassica mixes |
| Setups | Garden beds, field rows, fallow plots, orchard floors, vineyard alleys |
| Feature | Old Cobblers Farm™ Wicked Growth Cover Crops Fertilizer | 19-19-19 Granular Fertilizer | 19-19-19 All Purpose Fertilizer | Organic Alfalfa Meal | Garden-tone | General Purpose Fertilizer | Turf Builder Starter Food | 13-13-13 All Purpose Plant Food | Organic Pelletized Chicken Litter | All Purpose Fertilizer | All-Purpose Plant Food |
|---|---|---|---|---|---|---|---|---|---|---|---|
| NPK | 10-10-10 | 19-19-19 | 19-19-19 | 2.5-0.5-2.5 | 3-4-2004 | 18-18-18 | 24-25-4 | 13-13-13 | 3-2-2003 | 12-12-12 | 5-5-2005 |
| Phosphorus | 10.0% | 19.0% | 19.0% | 0.5% | 4.0% | 18.0% | 25.0% | 13.0% | 2.0% | 12.0% | 5.0% |
| Potassium | 10.0% | 19.0% | 19.0% | 2.5% | 4.0% | 18.0% | 4.0% | 13.0% | 3.0% | 12.0% | 5.0% |
| Form | Granular | ||||||||||
| Sizes | 5 lb | 10 lb | 15 lb | 20 lb | 50 lb | 40 lb | 5 lb, 50 lb | 4-36 lb | 50 lb | 15 lb | 40 lb | 25 lb | 40 lb | 4 lb, 12 lb |
| Release Speed | Moderate-release |
19-19-19 Granular Fertilizer
19-19-19 All Purpose Fertilizer
Organic Alfalfa Meal
Garden-tone
General Purpose Fertilizer
Turf Builder Starter Food
13-13-13 All Purpose Plant Food
Organic Pelletized Chicken Litter
All Purpose Fertilizer
All-Purpose Plant Food
Fast Establishment
Balanced NPK at seeding gives cover crop seedlings the nutrition they need to germinate quickly and close canopy before weeds can compete. Speed matters with cover crops.
Maximum Biomass Production
10% nitrogen fuels the leafy biomass that protects soil from erosion, suppresses weeds, and becomes green manure when you terminate the cover crop in spring.
Root Development for Soil Building
10% phosphorus supports the deep root growth that breaks compaction, creates soil pores, and feeds soil biology — the whole point of planting cover crops.
Go Light on N-Fixing Covers
Clover, vetch, and other legume covers fix their own nitrogen. Use the lighter rate (1 lb / 100 sq ft) for legume mixes to avoid suppressing nodule activity.
