Wicked Organics Organic Organic OMRI Listed

Evergreen Fertilizer

NPK 4-6-4

Organic Evergreen Fertilizer 4-6-4 is a natural fertilizer blended from mineral and organic ingredients, specifically formulated for ericaceous and acid-loving plants. With 4% nitrogen (split between water soluble and water insoluble forms for both immediate and slow-release feeding), 6% phosphorus for root and bloom development, and 4% potassium for winter hardiness, this formula delivers balanced organic nutrition tailored to the unique pH and nutrient requirements of evergreens, azaleas, rhododendrons, hydrangeas, and similar plants. The natural ingredients — including elemental sulfur, animal and vegetable protein meals, bone char, and natural sulfate of potash — not only feed the plants but also help maintain the acidic soil pH these species require. Unlike synthetic fertilizers that can shock sensitive acid-loving plants, this organic blend provides gentle, sustained nutrition that feeds both the plants and the beneficial soil organisms that support long-term soil health. Old Cobblers Farm™ Wicked Organics Organic Evergreen Fertilizer is crafted for gardeners who want beautiful evergreens and acid-loving ornamentals grown the natural way.

Application Rates FAQs
Nutrient Profile
WO-EVERGREEN
4–6–4
Evergreen Fertilizer
Derived From
  • Total Nitrogen (N) 4.0% (1.5% Water Soluble Nitrogen, 2.5% Water Insoluble Nitrogen), Available Phosphate (P2O5) 6.0%, Soluble Potash (K2O) 4.0%. Derived from: Elemental Sulfur, Animal Protein Meals, Vegetable Protein Meals, Natural Sulfate of Potash, Natural Nitrate of Soda, Bone Char
4-6-4
NPK Ratio
Organic
Formula Type
Twice per year — fall and spring. If once, choose fall.
Feeding Frequency
—
Compatible Plants
What It Is

Understanding 4-6-4

Organic Evergreen Fertilizer 4-6-4 is a natural, organic fertilizer designed specifically for plants that thrive in acidic soil conditions. Acid-loving plants don't truly "love" acid — they require nutrients like iron, manganese, and sulfur that become more available in soils with a lower pH. Many of these plants react poorly to base nutrients like calcium, magnesium, and sodium, showing stunted growth, discoloration, and stress when grown in neutral or alkaline soils.

A common misconception is that acid-loving plants prefer poor soil. In reality, acidic soils can be rich in organic matter and nutrients. This fertilizer feeds both the plants and the thriving soil ecosystem — the organic ingredients increase water-holding capacity and foster beneficial microorganisms that enhance nutrient exchange. The elemental sulfur component helps maintain proper soil acidity, while the protein meals and bone char provide a steady supply of macro and micronutrients throughout the growing season.

N
Nitrogen — 4%

Provides 4% total nitrogen (1.5% water soluble for immediate uptake, 2.5% water insoluble for slow-release feeding) to support steady foliage growth without burning sensitive acid-loving plants.

P
Phosphorus — 6%

Delivers 6% available phosphate (P2O5) to promote strong root development, increased bud formation, and healthy flowering in evergreens and acid-loving ornamentals.

K
Potassium — 4%

Supplies 4% soluble potash (K2O) to strengthen plant tissues, improve winter hardiness, and support disease resistance in perennial evergreen plantings.

Recommended Plants

Best For

Azaleas
Rhododendrons
Hydrangeas
Holly
Evergreens
Mountain Laurels
Gardenias
Ferns

Growing Detail

This fertilizer is optimized for all ericaceous and acid-loving plants. Azaleas and rhododendrons benefit from the sulfur-based acidification and slow-release protein meal nutrition. Hydrangeas respond to the balanced feeding with richer color and more abundant blooms. Evergreen trees and shrubs (yews, hollies, heaths, heathers) get the sustained nutrition they need for year-round foliage health. Mountain laurels, gardenias, ferns, lupine, huckleberries, oak trees, pachysandras, chrysanthemums, marigolds, raspberries, and flax all thrive with this formula's acid-maintaining nutrient profile.
Dosing Guide

Application Rates

Garden Beds
1 lb per 2 ft of crown diameter
Container / Pot
1 tbsp per gallon of soil
Water Mix
N/A — granular application
Lawn
N/A — formulated for evergreen trees and shrubs, not turf. Use 5-3-4 or 4-3-3 for lawns.
Trees
1 lb per 2 ft of crown diameter, broadcast under the drip line
Per Acre
870-1,300 lbs per acre
Frequency
Every 2-4 weeks

How to Apply

Seasonal Notes

Fall is the preferred application window — apply after summer growth slows to build winter hardiness and store nutrients for spring. Spring application supports the critical growth flush of new leaves, buds, and flowers. Both fall and spring applications together yield the best results. Not typically applied in summer when heat stress is a concern for many acid-loving plants. Avoid winter application when ground is frozen.
How It Compares

Side by Side

Compared to synthetic evergreen fertilizers like ammonium sulfate, Organic Evergreen 4-6-4 provides gentler, slower-release nutrition that won't burn sensitive acid-loving plants. The elemental sulfur naturally maintains soil acidity over time, unlike synthetic fertilizers that may acidify too aggressively. Versus cottonseed meal alone (a common DIY acid-loving plant fertilizer), this balanced blend provides phosphorus and potassium that cottonseed lacks, plus the bone char and protein meals deliver a more complete micronutrient profile.

Safety & Storage

Store in a cool, dry place in original packaging. Natural organic fertilizer — safe for use around children and pets when applied as directed. Wash hands after handling. May attract animals due to protein meal content — store sealed.

Got Questions?

Frequently Asked

  • The best organic evergreen fertilizer provides balanced nutrition from natural, slow-release ingredients with adequate nitrogen for foliage color and density. An organic formula made from protein meals, bone char, and sulfate of potash delivers steady NPK nutrition while building soil health around the root zone. Organic fertilizers are especially beneficial for evergreens because the slow-release action feeds trees gradually without the growth surges that can produce weak, frost-susceptible new growth. Old Cobblers Farm™ Wicked Organics Organic Evergreen Fertilizer provides gentle, sustained nutrition for naturally healthier evergreen trees.
  • Apply organic evergreen fertilizer in early spring, 2–4 weeks before bud break, to give soil microbes time to process the organic ingredients and make nutrients available when the tree needs them most. A second application in early fall supports root growth before winter dormancy. Because organic fertilizers release nutrients slowly, timing the application slightly earlier than you would with synthetics ensures peak nutrient availability coincides with peak growth. Old Cobblers Farm™ Wicked Organics Organic Evergreen Fertilizer is designed for spring and fall applications that match the natural growth cycle of conifers and broadleaf evergreens.
  • For established evergreen trees, apply 1–3 pounds of organic fertilizer per inch of trunk diameter, broadcast under the canopy drip line. For evergreen hedges and foundation plantings, use 3–5 pounds per 100 square feet of bed area. For container evergreens, apply 1–2 tablespoons per gallon of soil. Because organic fertilizer concentrations are lower than synthetics, application rates are higher but the risk of burn is dramatically lower. Old Cobblers Farm™ Wicked Organics Organic Evergreen Fertilizer is gentle enough for safe application at these rates.
  • Yes, organic evergreen fertilizer works on all evergreen types including pines, spruces, firs, cedars, hemlocks, arborvitae, junipers, hollies, boxwoods, rhododendrons, azaleas, and camellias. The balanced organic formula supports healthy foliage, strong roots, and disease resistance across both coniferous and broadleaf evergreens. For acid-loving species like rhododendrons and azaleas, supplementing with elemental sulfur may help maintain optimal soil pH. Old Cobblers Farm™ Wicked Organics Organic Evergreen Fertilizer is versatile enough for any evergreen in your landscape.
  • Organic evergreen fertilizer releases nutrients gradually as soil organisms break down natural ingredients, providing steady feeding over weeks to months. Synthetic evergreen fertilizer delivers nutrients immediately for faster visible results. Organic products build soil health, improve soil structure, and support beneficial microorganisms around the tree's root zone. Synthetics do not provide these soil-building benefits. Organic fertilizers carry virtually no burn risk, while synthetics can damage roots if over-applied. Old Cobblers Farm™ offers both Wicked Organics Organic Evergreen Fertilizer and Wicked Growth Evergreen 10-10-10 with Iron to match your preferences.
  • Yes, organic fertilizer improves evergreen color by providing steady nitrogen and micronutrients that support chlorophyll production. The gradual nutrient release produces consistent, deep green color rather than the bright green flush followed by fading that can occur with synthetic fertilizers. Over time, the soil health improvements from organic fertilization also enhance nutrient availability and uptake efficiency, producing naturally greener, healthier trees. Old Cobblers Farm™ Wicked Organics Organic Evergreen Fertilizer promotes rich, lasting green color through natural, sustained nutrition.
  • Yes, Old Cobblers Farm™ Wicked Organics Organic Evergreen Fertilizer is OMRI-Listed for certified organic production. All ingredients meet the strict standards of the Organic Materials Review Institute, containing only approved natural sources with no synthetic chemicals or prohibited substances. This certification is important for organic landscapers, nurseries, and homeowners who want to maintain truly organic growing practices. Old Cobblers Farm™ Wicked Organics carries the OMRI seal across its entire organic product lineup.

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