Best Cover Crop Fertilizer (10-10-10): Balanced Nutrition for Fast Establishment & Maximum Biomass Buy on Old Cobblers Farm
Cover crops need a quick start to outcompete weeds and build biomass before winter. This 10-10-10 provides the balanced kick at seeding that drives rapid germination, strong root establishment, and maximum above-ground biomass for soil protection.
Old Cobblers Farm™ Wicked Growth Cover Crops Fertilizer
by Conventional Fertilizer — 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 |
| Item Form | Granular |
| Coverage | 250–500 sq ft per 5 lb bag |
| Category | Conventional Fertilizer |
| Type | Lawn & Turf |
| Sizes | 5 lb | 10 lb | 15 lb | 20 lb |
| NPK | 10-10-10 |
| Nitrogen | 10% |
| Phosphorus | 10% available phosphate |
| Potassium | 10% soluble potash |
| Form | Granular |
| Rate | 1–2 lbs / 100 sq ft |
| Method | Broadcast before seeding |
| Frequency | 1x at seeding |
| Sizes | 5, 10, 15, 20 lb bags |
| Best For | Winter rye, clover, vetch, buckwheat, oats, radish, all cover crops |
| Note | Use lighter rate for N-fixing legume covers |
| Feature | Old Cobblers Farm™ Wicked Growth Cover Crops Fertilizer Old Cobblers Farm | 19-19-19 Granular Fertilizer GroundWork | 19-19-19 All Purpose Fertilizer Pennington | Organic Alfalfa Meal Down To Earth | Garden-tone Espoma Organic | General Purpose Fertilizer Shur-Crop | Turf Builder Starter Food Scotts | 13-13-13 All Purpose Plant Food Expert Gardener | Organic Pelletized Chicken Litter Coop Gro | All Purpose Fertilizer Howard Johnson's | All-Purpose Plant Food True Organic |
|---|---|---|---|---|---|---|---|---|---|---|---|
| NPK | 10-10-10 | 19-19-19 | 19-19-19 | 2.5-0.5-2.5 | 3-4-4 | 18-18-18 | 24-25-4 | 13-13-13 | 3-2-3 | 12-12-12 | 5-5-5 |
| Form | Granular | — | — | — | — | — | — | — | — | — | — |
| Coverage | 250–500 sq ft per 5 lb bag | 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 | $30-$35 | $26-$30 | $20-$65 | $12-$45 | $40-$45 | $25 | $19-$22 | $22-$25 | $25-$30 | $15-$30 |
| Our Take | The cover crop establishment formula that gets your soil-building s... | — | — | — | — | — | — | — | — | — | — |
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.
