Wicked Organics Organic Organic OMRI Listed

Citrus Fertilizer

NPK 4-6-4

Organic Citrus Fertilizer is a premium, balanced fertilizer specially formulated for citrus trees and other fruiting plants. Made from natural mineral and organic ingredients, it promotes strong root systems, vigorous growth, and abundant fruiting while feeding the soil's microbial life for healthier plants season after season. The phosphorus-rich 4-6-4 formula delivers a slow-release, steady supply of essential nutrients that support lush foliage, vibrant blooms, and superior fruit set without overstimulating vegetative growth.

Application Rates FAQs
Nutrient Profile
WO-ORG-CITRUS
4–6–4
Citrus Fertilizer
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
2 times per year (early spring and late summer)
Feeding Frequency
—
Compatible Plants
What It Is

Understanding 4-6-4

Old Cobblers Farm™ Wicked Organics Organic Citrus Fertilizer is a 4-6-4 organic blend formulated specifically for citrus and fruiting plants. It is crafted from Elemental Sulfur, Animal Protein Meals, Vegetable Protein Meals, Natural Sulfate of Potash, Natural Nitrate of Soda, and Bone Char.

The elevated phosphorus (6%) sets this apart from the general-purpose 5-3-4 and starter 2-3-3 formulas — citrus trees require a delicate balance of nutrients to thrive and produce high-quality fruit. The formulation enhances nutrient availability without overstimulating vegetative growth, ensuring the plant's energy is focused on producing flavorful, juicy fruit. By nourishing the soil microbiome, it fosters long-term plant vitality and resilience against environmental stresses.

N
Nitrogen — 4%

4.0% Total Nitrogen (1.5% Water Soluble, 2.5% Water Insoluble) — supports lush foliage and steady growth without overstimulation

P
Phosphorus — 6%

6.0% Available Phosphate (P₂O₅) — promotes strong root systems, vibrant blooms, and superior fruit set

K
Potassium — 4%

4.0% Soluble Potash (K₂O) — enhances fruit quality, flavor, and overall plant resilience

Recommended Plants

Best For

Citrus Trees
Lemons
Limes
Oranges
Grapefruits
Kumquats
Mandarins
Figs
Pomegranates
Container-Grown Citrus
Fruiting Trees & Shrubs

Growing Detail

On Citrus Trees: Delivers slow-release, steady supply of essential nutrients that support lush foliage, vibrant blooms, and superior fruit set. Enhances nutrient availability without overstimulating vegetative growth, ensuring plant energy focuses on producing flavorful, juicy fruit. Nourishes the soil microbiome for long-term plant vitality and resilience against environmental stresses.

On Fruiting Trees and Shrubs: Works exceptionally well on figs, pomegranates, lemons, limes, oranges, grapefruits, kumquats, and mandarins. Strengthens root systems, encourages bud development, and improves overall plant health. When applied seasonally, supports continuous production and enhances fruit size, flavor, and color.

On Container-Grown Citrus: Potted and container-grown citrus trees benefit greatly from the slow, gentle feeding action. Minimizes risk of nutrient burn while promoting balanced growth and fruit production. Regular feeding ensures optimal soil conditions, healthy roots, and consistent yields even in confined growing environments.

On Landscape Applications: Landscapers and home gardeners trust it to establish and maintain healthy fruiting plants. Slow-release formula reduces transplant shock and supports strong establishment, ensuring vibrant growth long after planting. Safe for beginners and seasoned gardeners alike with non-burning composition.
Dosing Guide

Application Rates

Garden Beds
1 lb per 2 feet of canopy diameter
Container / Pot
Scale rate to container canopy size; 1-2 tbsp per gallon of soil for small containers
Water Mix
N/A — granular application
Lawn
N/A — formulated for citrus trees, not turf
Trees
1 lb per 2 feet of canopy diameter, spread under drip line
Per Acre
N/A — per-tree application
Frequency
Every 2-4 weeks

How to Apply

Seasonal Notes

Apply in early spring before growth begins and again in late summer to support continued health and productivity. For container-grown citrus, maintain regular feeding schedule throughout growing season. In frost-prone areas, ensure late summer application is early enough for plants to utilize nutrients before dormancy.
How It Compares

Side by Side

Organic Citrus Fertilizer (4-6-4) has the highest phosphorus content of the Wicked Organics lineup at 6%, specifically targeting bloom production and fruit set in citrus. Compared to the general-purpose 5-3-4, it swaps the nitrogen emphasis for phosphorus emphasis — less vegetative push, more flowering and fruiting energy. Different ingredient base than the 5-3-4 and 2-3-3: includes Elemental Sulfur and Natural Nitrate of Soda alongside the protein meals and Bone Char.

Safety & Storage

Store in a dry environment. Natural mineral and organic ingredients. Non-burning formula safe for all citrus and fruiting plant applications. Wear gloves if skin sensitivities appear. Wash hands after use.

Got Questions?

Frequently Asked

  • The best organic citrus fertilizer provides balanced nutrition with emphasis on nitrogen for foliage and potassium for fruit quality, along with essential micronutrients like iron, manganese, and zinc that citrus trees specifically require. An organic formula made from protein meals, bone char, sulfate of potash, and natural micronutrient sources delivers steady feeding while building soil health around the root zone. Old Cobblers Farm™ Wicked Organics Organic Citrus Fertilizer is specifically formulated for lemons, oranges, limes, grapefruits, tangerines, and all other citrus varieties.
  • Fertilize citrus trees three times per year for best results: in early spring before the spring growth flush, in early summer to support fruit development, and in early fall to sustain the tree through winter. Container citrus may need feeding every 4–6 weeks during active growth. Avoid heavy fertilization in late fall and winter for outdoor citrus in cooler climates, as it can stimulate frost-vulnerable new growth. Old Cobblers Farm™ Wicked Organics Organic Citrus Fertilizer provides sustained nutrition through its slow-release organic ingredients for less frequent applications.
  • For established lemon trees, apply 1–2 pounds of organic citrus fertilizer per inch of trunk diameter, spread under the canopy drip line. For young trees, use ½–1 pound total. For container lemon trees, apply 2–3 tablespoons per gallon of pot size every 4–6 weeks during active growth. Always keep fertilizer several inches away from the trunk. Water deeply after application. Old Cobblers Farm™ Wicked Organics Organic Citrus Fertilizer is gentle enough for container citrus and effective enough for large in-ground trees.
  • Citrus trees require nitrogen for leaf production and canopy density, phosphorus for root health and flower development, and potassium for fruit size, sweetness, and juice content. They also have uniquely high requirements for micronutrients — especially iron, manganese, zinc, and magnesium — deficiencies in which cause distinctive yellowing patterns, small fruit, and reduced yields. A complete citrus fertilizer with both macro and micronutrients is essential. Old Cobblers Farm™ Wicked Organics Organic Citrus Fertilizer delivers the full nutrient package citrus trees demand for healthy growth and quality fruit production.
  • Yes, container citrus thrives with organic fertilization. Dwarf varieties of lemons, limes, kumquats, and tangerines are popular container plants that respond well to organic feeding. Apply 2–3 tablespoons of organic citrus fertilizer per gallon of pot size every 4–6 weeks during the growing season. The slow-release organic ingredients reduce salt buildup that can damage citrus roots in containers. Ensure containers have excellent drainage and use a well-draining citrus potting mix. Old Cobblers Farm™ Wicked Organics Organic Citrus Fertilizer is ideal for container citrus on patios, balconies, and indoor growing spaces.
  • Yellow citrus leaves can indicate several nutrient deficiencies. Iron deficiency causes interveinal yellowing on new leaves (veins stay green). Nitrogen deficiency causes uniform yellowing of older leaves. Magnesium deficiency creates a V-shaped yellow pattern on older leaves. Zinc deficiency produces small, mottled leaves. Overwatering and root rot can also cause yellowing. A complete organic citrus fertilizer with micronutrients often corrects multiple deficiencies simultaneously. Old Cobblers Farm™ Wicked Organics Organic Citrus Fertilizer addresses the most common citrus nutrient deficiencies with balanced macro and micronutrient nutrition.
  • All citrus varieties respond well to organic fertilization, including lemons (Meyer, Eureka, Lisbon), limes (Persian, Key, Kaffir), oranges (Navel, Valencia, Blood), grapefruits, tangerines, mandarins, kumquats, clementines, tangelos, and citrons. Both standard and dwarf varieties benefit equally. Whether grown in the ground in warm climates or in containers in cooler regions, organic citrus fertilizer supports healthy trees and quality fruit. Old Cobblers Farm™ Wicked Organics Organic Citrus Fertilizer provides comprehensive organic nutrition for the entire citrus family.

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