Wicked Organics Organic Organic OMRI Listed

10-2-8 Fertilizer – Organic Gardening

NPK 10-2-8

10-2-8 Organic All Season Fertilizer is a high-performance organic nutrient blend formulated to provide steady feeding through the entire growing season. With the highest nitrogen (10%) and potassium (8%) levels in the Wicked Organics lineup, this product delivers reliable nutrition for both cool- and warm-season turf while also enhancing general landscape plantings. The formula is derived entirely from natural inputs — feather meal, meat & bone meal, blood meal, and sulfate of potash. More than 9.00% of the total nitrogen is in the form of slowly available water-insoluble nitrogen, which releases gradually through microbial activity in the soil. This slow-release profile greatly reduces the risk of nitrogen flushes, leaching, or burn while providing consistent color and growth from spring through fall. The 8% potassium component improves metabolic function, drought tolerance, and helps maintain turf density and color under stress. Secondary nutrients include 1.80% calcium and 3.00% sulfur for enhanced plant metabolism. Old Cobblers Farm™ Wicked Organics 10-2-8 All Season is the premium organic choice for turf managers, landscapers, and growers who want maximum performance from an organic program.

Application Rates FAQs
Nutrient Profile
WO-10-2-8
10–2–8
10-2-8 Fertilizer – Organic Gardening
Derived From
  • Feather Meal, Meat and Bone Meal, Blood Meal, and Sulfate of Potash. Also provides: Calcium (Ca) 1.80%, Sulfur (S) 3.00%.
10-2-8
NPK Ratio
Organic
Formula Type
3-4 applications per growing season for turf; 2-3 for landscape beds and gardens
Feeding Frequency
—
Compatible Plants
What It Is

Understanding 10-2-8

Wicked Organics 10-2-8 All Season is a premium organic fertilizer formulated from four natural inputs: Feather Meal, Meat and Bone Meal, Blood Meal, and Sulfate of Potash. It delivers the highest combined NPK content in the Wicked Organics line — 20% total nutrients per pound.

The guaranteed analysis shows: Total Nitrogen 10.00% (0.25% Ammoniacal, 9.00% Water Insoluble from feather meal and meat & bone meal, 0.75% Other Water Soluble), Available Phosphate 2.00%, Soluble Potash 8.00%, Calcium 1.80%, and Sulfur 3.00%.

The defining characteristic is the 9.00% water-insoluble nitrogen — the highest slow-release nitrogen fraction in the organic lineup. This nitrogen releases gradually through microbial decomposition, providing weeks of steady nutrition from each application. The high potassium content (8%) from sulfate of potash is equally important, supporting the metabolic functions that keep plants vigorous through heat, drought, and traffic stress. The low phosphorus (2%) is intentional — many established turf and landscape sites have adequate phosphorus, making additional P unnecessary and environmentally responsible to minimize.

N
Nitrogen — 10%

10.0% Total Nitrogen (0.25% Ammoniacal, 9.00% Water Insoluble, 0.75% Other Water Soluble) — the highest total nitrogen in the Wicked Organics line, with 90% in slow-release water-insoluble form for steady, season-long feeding from feather meal and meat & bone meal.

P
Phosphorus — 2%

2.0% Available Phosphate (P2O5) — moderate phosphorus to support root formation and establishment without excess buildup in soils that already have adequate phosphorus levels.

K
Potassium — 8%

8.0% Soluble Potash (K2O) — the highest potassium level in the Wicked Organics line, from sulfate of potash, improving metabolic function, drought tolerance, color retention, and overall plant vigor.

Recommended Plants

Best For

All-Season Turf
Cool-Season Grasses
Warm-Season Turf
Renovation/Overseeding
Landscape Beds
Trees & Shrubs
Ornamental Plantings
Sports Fields

Growing Detail

All-season turf maintenance is the primary application — the steady nitrogen release maintains vigor and color from spring through fall without the surge-and-crash cycle. Cool-season grasses (fescue, bluegrass, ryegrass) respond with consistent green-up and density. Warm-season turf (Bermuda, Zoysia, St. Augustine) benefits from the sustained nutrient release during peak growth periods. Renovation and overseeding projects receive dependable nitrogen for root development and uniform establishment. Landscape beds, trees, and shrubs gain balanced nutrition without encouraging excessive top growth. The low phosphorus makes this ideal for sites where phosphorus levels are already adequate or where phosphorus runoff restrictions apply.
Dosing Guide

Application Rates

Garden Beds
5-10 lbs per 1,000 sq ft (delivers 0.50-1.00 lb actual N per 1,000 sq ft)
Container / Pot
2-3 tbsp per gallon of soil
Water Mix
N/A — granular application
Lawn
5-10 lbs per 1,000 sq ft; enhanced results when applied during or after core aeration
Trees
Apply around drip line — rate varies by tree size
Per Acre
220-435 lbs per acre
Frequency
Every 2-4 weeks

How to Apply

Seasonal Notes

Spring: Apply at green-up for cool-season turf. Begin applications for warm-season turf as growth initiates. Summer: Continue applications every 4-6 weeks for sustained color and vigor. Fall: Apply for fall recovery on cool-season turf and to prepare for winter. Ideal for renovation and overseeding. Winter: Do not apply to dormant or frozen turf.
How It Compares

Side by Side

The 10-2-8 delivers the most nitrogen and potassium per pound of any Wicked Organics product — 10% N and 8% K compared to the 8-3-5 Stress Guard (8% N, 5% K) and 5-3-4 (5% N, 4% K). The lower application rate (5-10 lbs vs. 20-30 lbs per 1,000 sq ft for 5-3-4) means less product per application. The intentionally low phosphorus (2%) makes it environmentally responsible for sites with adequate P. Compared to the 8-3-5, the 10-2-8 has higher N and K but less calcium, magnesium, and sulfur — choose 8-3-5 for stress conditioning, 10-2-8 for all-season maintenance.

Safety & Storage

Store in a dry environment. Natural product. Wear gloves if skin sensitivities appear. Wear approved respirator if sensitive to dust. Eye protection optional. Wash hands after use. Keep away from water sources.

Got Questions?

Frequently Asked

  • Organic 10-2-8 is a high-nitrogen, moderate-potassium organic fertilizer made from natural ingredients including vegetable and animal protein meals, sulfate of potash, and bone char. The 10% nitrogen fuels vigorous growth, 2% phosphorus supports root health, and 8% potassium enhances disease resistance and fruit quality. Unlike synthetic fertilizers, the nutrients release slowly as soil microbes break down the organic ingredients, providing steady feeding over weeks without the risk of burn. Old Cobblers Farm™ Wicked Organics 10-2-8 Fertilizer is ideal for organic vegetable gardens, flower beds, and container plantings.
  • Organic 10-2-8 is versatile enough for most garden plants. Its higher nitrogen content makes it especially effective for leafy vegetables (lettuce, kale, spinach), herbs, container plantings, and any crops in their vegetative growth stage. The moderate potassium supports fruiting vegetables like tomatoes and peppers as well. It works well in raised beds, traditional gardens, containers, and even as a lawn fertilizer for organic lawn care programs. Old Cobblers Farm™ Wicked Organics 10-2-8 Fertilizer is OMRI-Listed for certified organic production and suitable for all garden applications.
  • Organic fertilizers like 10-2-8 release nutrients gradually as soil microorganisms break down the natural ingredients. This slow-release action provides steady nutrition over weeks to months, reducing the risk of nutrient burn and leaching. Organic fertilizers also feed the soil biology, improving soil structure, water retention, and long-term fertility. Synthetic fertilizers deliver nutrients immediately in plant-available form for quick results but do not build soil health. Many growers combine both approaches. Old Cobblers Farm™ Wicked Organics 10-2-8 Fertilizer builds soil health while delivering meaningful nutrition through natural, slow-release ingredients.
  • Apply organic fertilizer like 10-2-8 every 4–8 weeks during the growing season, depending on the crop and soil conditions. Because organic fertilizers release nutrients slowly, they last longer per application than synthetics but may take 1–2 weeks to become fully available. For heavy feeders like tomatoes and corn, apply every 4–6 weeks. For lighter feeders and perennials, every 6–8 weeks is sufficient. Incorporate into the top few inches of soil and water in. Old Cobblers Farm™ Wicked Organics 10-2-8 Fertilizer provides sustained nutrition with each application for less frequent refeeding.
  • Yes, organic 10-2-8 is made entirely from natural ingredients and is safe for use on all edible crops including vegetables, herbs, fruits, and root crops. It contains no synthetic chemicals, heavy metals, or artificial additives. It is OMRI-Listed, meaning it meets the strict standards of the Organic Materials Review Institute for use in certified organic production. You can apply it right up to harvest time without concerns about chemical residues. Old Cobblers Farm™ Wicked Organics 10-2-8 Fertilizer is trusted by organic gardeners who prioritize food safety and soil health.
  • Wicked Organics 10-2-8 is formulated from vegetable protein meals, animal protein meals, natural sulfate of potash, and bone char. These ingredients provide a broad spectrum of nutrients beyond just NPK — including calcium, sulfur, and trace minerals that support plant health and soil biology. Vegetable and animal protein meals are the primary nitrogen sources, releasing nitrogen slowly as soil microbes decompose the organic matter. Sulfate of potash provides chloride-free potassium. Old Cobblers Farm™ Wicked Organics 10-2-8 Fertilizer uses only high-quality, OMRI-Listed natural ingredients.
  • Yes, organic fertilizer works well in containers and raised beds. For container plantings, mix 1–2 tablespoons of 10-2-8 per gallon of soil at planting and top-dress every 4–6 weeks during the growing season. Because containers lack the soil biology of in-ground gardens, organic fertilizers may release nutrients slightly slower in pots. To jumpstart the process, ensure containers have active, healthy soil with compost. Old Cobblers Farm™ Wicked Organics 10-2-8 Fertilizer provides gentle, sustained feeding that is safe for even the most sensitive container plants.

Ready to Grow ?

Premium Old Cobblers Farm™ Wicked Organics 10-2-8 Fertilizer – Organic Gardening for your farm

Shop Old Cobblers Farm™ Wicked Organics 10-2-8 Fertilizer – Organic Gardening