Wicked Organics Organic Organic OMRI Listed

4-3-3 Fertilizer – Trees, Shrubs, Perennials

NPK 4-3-3

4-3-3 Organic Fertilizer for Trees, Shrubs, and Perennials is a single-ingredient, all-purpose organic fertilizer made from dehydrated, pasteurized poultry litter. Designed to fulfill the needs of certified organic growers, ecological land care professionals, and home gardeners alike, this consistent, dust-free granular product flows through any style of spreading equipment and delivers complete, balanced nutrition in a natural slow-release form. With 4% nitrogen, 3% phosphorus, and 3% potassium — plus essential micronutrients, 3% calcium, and 60% organic matter — this fertilizer feeds both plants and the living soil ecosystem. The slow-release form minimizes nutrient leaching while maximizing plant uptake, making it ideal for long-lived trees, shrubs, and perennials that need sustained feeding over years rather than quick nutrient hits. Regular applications build stress tolerance in turfgrass and garden areas, helping plants withstand traffic, heat, drought, and wind. This product is tested throughout the production process to ensure it is free of harmful pathogens or toxins and contains no chemical additives or binders. Old Cobblers Farm™ Wicked Organics 4-3-3 is OMRI Listed for certified organic production and is safe for the environment when used at recommended rates.

Application Rates FAQs
Nutrient Profile
WO-4-3-3
4–3–3
4-3-3 Fertilizer – Trees, Shrubs, Perennials
Derived From
  • Dehydrated, pasteurized poultry litter. Single-ingredient organic fertilizer. Also provides: Calcium (Ca) 3.0%, Sulfur (S) 0.76%, Magnesium (Mg) 0.50%, Iron (Fe) 0.13%, Copper (Cu) 0.07%, Zinc (Zn) 0.07%, Manganese (Mn) 0.07%. Contains 60% Organic Matter and 10% Humus.
4-3-3
NPK Ratio
Organic
Formula Type
2-4 applications per growing season depending on plant type, season length, and expectations
Feeding Frequency
—
Compatible Plants
What It Is

Understanding 4-3-3

Wicked Organics 4-3-3 is a complete, all-natural, biologically active organic fertilizer providing essential primary plant nutrients in a natural, slow-release form for healthier plants with less leaching. Made from a single ingredient — dehydrated, pasteurized poultry litter — it delivers an excellent balance of primary nutrients (nitrogen, phosphorus, and potassium) along with important secondary nutrients and trace elements present as organic complexes or in less water-soluble slow-release forms.

The typical analysis extends well beyond NPK: Calcium 3.0%, Sulfur 0.76%, Magnesium 0.50%, Iron 0.13%, Copper 0.07%, Zinc 0.07%, Manganese 0.07%, plus 10% Humus and 60% Organic Matter at a pH of approximately 6.5. This rich micronutrient profile sets it apart from fertilizers that deliver only N-P-K without the secondary nutrients and trace elements that trees, shrubs, and perennials need for long-term health.

25 lbs of 4-3-3 provides 1 lb of nitrogen, ¾ lb of phosphate, and ¾ lb of potash — a practical reference for calculating application needs across any scale.

N
Nitrogen — 4%

4.0% Total Nitrogen — provides slow-release organic nitrogen from dehydrated poultry litter for sustained feeding of woody plants and perennials without stimulating excessive soft growth vulnerable to pests and frost.

P
Phosphorus — 3%

3.0% Available Phosphate (P2O5) — supports root establishment and development in newly planted trees and shrubs, and promotes flower bud formation in perennial plantings.

K
Potassium — 3%

3.0% Soluble Potash (K2O) — strengthens cell walls, improves winter hardiness, and enhances overall plant resilience against drought, wind, and disease stress.

Recommended Plants

Best For

Shade Trees
Ornamental Trees
Deciduous Shrubs
Evergreen Shrubs
Perennial Flowers
Hedges
Lawns
Landscape Beds

Growing Detail

Trees and shrubs benefit from the slow-release nitrogen that supports steady growth without triggering excessive soft tissue vulnerable to pests and cold damage. The 60% organic matter content builds soil health in the root zone over time, improving water retention and microbial activity that long-lived woody plants depend on. Perennial flowers receive balanced nutrition for strong crown development and reliable return each spring. Lawns develop thick, invasive root systems and healthy soils that naturally crowd out weeds. Landscape beds maintain vibrant growth season after season. This fertilizer will not burn, even if over-applied — a significant advantage for applications around established trees and sensitive perennials.
Dosing Guide

Application Rates

Garden Beds
15-20 lbs per 1,000 sq ft for perennials, legume vegetables, or herbs; 25-30 lbs per 1,000 sq ft for vegetables and annual flowers
Container / Pot
2-3 tbsp per gallon of soil
Water Mix
N/A — granular application
Lawn
25 lbs per 1,000 sq ft; 2-4 applications per growing season
Trees
Apply around drip line — rate varies by tree size. For new establishment, 25 lbs per 1,000 sq ft incorporated into top 2 inches of soil.
Per Acre
650-1,300 lbs per acre depending on crop and soil conditions
Frequency
Every 2-4 weeks

How to Apply

Seasonal Notes

Spring: Apply when growth resumes for lawns, trees, and perennials. Ideal first application of the season. Summer: Continue applications every 4-8 weeks during active growth. Fall: Apply for root development and winter hardiness — fall applications are particularly effective for perennial plants whose root systems are most active after a season of photosynthesis. Winter: Do not apply to frozen ground.
How It Compares

Side by Side

Compared to the 5-3-4 Pro-Gro formula, the 4-3-3 provides slightly less nitrogen and uses a single-ingredient source (poultry litter) rather than a multi-ingredient blend, making it more cost-effective for large-area applications like parks, sports fields, and extensive landscape beds. The 60% organic matter content is significantly higher than most organic fertilizers, building soil health faster. Versus the 2-3-3 starter formula, the 4-3-3 delivers twice the nitrogen — better suited for established plantings rather than transplants.

Safety & Storage

Store in a dry environment. Natural product with no known hazards. Contains no chemical additives or binders. This fertilizer will not burn, even if over-applied. Safe for the environment when used at recommended rates. Wear gloves if skin sensitivities appear. Wash hands after use.

Got Questions?

Frequently Asked

  • Organic 4-3-3 is a balanced, slow-release fertilizer specifically designed for trees, shrubs, and perennial plants. The moderate nitrogen (4%) supports steady canopy growth without overstimulating weak, leggy branches. Phosphorus (3%) maintains healthy root systems, and potassium (3%) enhances disease resistance and winter hardiness. The organic ingredients feed soil microbes, building long-term soil health around the root zone. Old Cobblers Farm™ Wicked Organics 4-3-3 Fertilizer is ideal for organic landscaping, ornamental plantings, and perennial gardens where sustained, gentle nutrition is preferred.
  • Apply organic 4-3-3 fertilizer in early spring before bud break and optionally in early fall to support root growth before dormancy. Because organic fertilizers release nutrients slowly, applying 2–4 weeks before the tree's peak growth period gives soil microbes time to break down the ingredients and make nutrients available. For newly planted trees and shrubs, wait until the second growing season to begin fertilizing. Old Cobblers Farm™ Wicked Organics 4-3-3 Fertilizer provides gentle, sustained nutrition that aligns with the natural growth rhythms of woody plants.
  • For shrubs, apply ½–1 cup of organic 4-3-3 per small shrub and 1–3 cups for large established specimens, spreading around the drip line. For perennials, use 1–2 tablespoons per plant or 3–5 pounds per 100 square feet of bed area. For trees, apply 1–2 pounds per inch of trunk diameter. Work the fertilizer into the top few inches of soil and water thoroughly. Reapply in mid-season if plants show signs of nutrient need. Old Cobblers Farm™ Wicked Organics 4-3-3 Fertilizer delivers effective organic nutrition at practical, easy-to-measure rates.
  • Yes, organic 4-3-3 works well on deciduous trees, evergreen trees, flowering trees, fruit trees, and ornamental trees. The balanced nutrient profile supports healthy growth across all tree types, and the organic ingredients improve the soil biology around the root zone for better long-term tree health. For acid-loving trees like dogwoods and magnolias, pair with an organic soil acidifier if needed. Old Cobblers Farm™ Wicked Organics 4-3-3 Fertilizer is a versatile organic option for shade trees, ornamental trees, hedges, foundation plantings, and mixed perennial beds.
  • Organic tree fertilizer (like 4-3-3) releases nutrients slowly as soil organisms break down natural ingredients, feeding the tree gradually while improving soil structure and biology. Synthetic tree fertilizer provides nutrients immediately in plant-available form for faster response but does not build soil health. Organic fertilizers reduce the risk of root burn and nutrient leaching, making them safer for trees with sensitive root systems. The trade-off is slower initial response time. Old Cobblers Farm™ offers both organic (Wicked Organics 4-3-3) and conventional (Wicked Growth Shade Trees) options to match your preferences.
  • Organic 4-3-3 is safer for newly planted trees than synthetic fertilizers because the slow-release nutrients are less likely to burn tender new roots. However, it is still best to wait until the second growing season before fertilizing most newly planted trees and shrubs. In the first year, focus on proper watering and mulching to encourage root establishment. When you begin feeding in year two, organic 4-3-3 provides gentle nutrition that supports healthy growth without stress. Old Cobblers Farm™ Wicked Organics 4-3-3 Fertilizer is gentle enough for young trees when applied at recommended rates.
  • Yes, organic fertilizers significantly improve soil health over time. As soil microbes break down the organic ingredients, they create humus — a stable form of organic matter that improves soil structure, water retention, drainage, and nutrient-holding capacity. The microbial activity itself makes existing soil nutrients more available to plants. Over seasons of organic fertilization, soil becomes darker, more crumbly, and more biologically active. This is one of the key advantages of organic over synthetic fertilization. Old Cobblers Farm™ Wicked Organics 4-3-3 Fertilizer feeds both your trees and the living soil ecosystem they depend on.

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