Wicked Growth

0-0-60 Fertilizer – Potassium

NPK 0-0-60

Potash fertilizer (0-0-60) is a concentrated source of potassium chloride (KCl) that provides 60% potassium oxide (K₂O)—the highest potassium concentration available in a standard dry fertilizer. Potassium is one of the three primary macronutrients all plants require, yet it is often the most overlooked element in home garden and lawn care programs. This essential nutrient plays a critical role in virtually every plant function: it regulates water movement through cells, activates over 80 enzymes involved in plant growth, strengthens cell walls to resist disease and drought stress, and directly improves the quality and flavor of fruits and vegetables. Without adequate potassium, plants exhibit yellowing leaf margins, weak stems, poor root development, and reduced winter hardiness. Old Cobblers Farm™ Wicked Growth 0-0-60 Potash Fertilizer delivers pure potassium without any nitrogen or phosphorus, making it the ideal targeted treatment when soil tests show potassium deficiency but adequate levels of the other macronutrients. Whether you are growing root vegetables like potatoes and carrots, flowering bulbs like tulips and lilies, or maintaining a healthy lawn, this granular fertilizer is easy to broadcast, works into the soil quickly, and provides results you can see in stronger stems, deeper roots, and more vibrant blooms.

Application Rates FAQs
Nutrient Profile
WG-0-0-60
0–0–60
0-0-60 Fertilizer – Potassium
Derived From
  • Potassium Chloride (KCl), also known as Muriate of Potash (MOP)
0-0-60
NPK Ratio
Organic
Formula Type
1-2 times per year based on soil test results. Apply in spring before planting and optionally in early fall for perennials.
Feeding Frequency
—
Compatible Plants
What It Is

Understanding 0-0-60

Muriate of Potash (MOP) is the most widely used potassium fertilizer in the world, accounting for approximately 95% of all potash fertilizer production. The term 'muriate' is an older chemical term meaning 'chloride,' so muriate of potash is simply potassium chloride (KCl). It is mined from underground deposits of ancient evaporated sea beds and processed into the familiar pink, red, or white granules.

The 0-0-60 analysis means the product contains 0% nitrogen, 0% phosphorus, and 60% potassium oxide (K₂O). This makes it the most concentrated and cost-effective source of potassium among common fertilizers—roughly 40-50% less expensive per unit of K₂O than sulfate of potash (0-0-50).

Potassium functions differently from nitrogen and phosphorus in plants. Rather than becoming part of plant structures, potassium acts as a regulator and activator. It controls the opening and closing of stomata (leaf pores) to manage water loss, activates enzymes that drive photosynthesis and protein synthesis, and helps transport sugars from leaves to roots and fruits. Plants with adequate potassium are visibly more robust—thicker stems, deeper green color, better cold tolerance, and higher quality produce.

N
Nitrogen — 0%

N/A — Contains no nitrogen. Pair with a nitrogen source like 46-0-0 Urea or 21-0-0 Ammonium Sulfate if nitrogen is also needed

P
Phosphorus — 0%

N/A — Contains no phosphorus. Use alongside 0-46-0 Triple Phosphate if phosphorus levels are low

K
Potassium — 60%

Delivers a concentrated 60% potassium (K₂O) that strengthens plant cell walls, improves drought and disease resistance, enhances root growth, regulates water uptake, and boosts photosynthesis for vigorous overall plant health

Recommended Plants

Best For

Potatoes
Carrots
Onions
Tulips
Lilies
Tomatoes
Root Vegetables
Fruit Trees

Growing Detail

Root vegetables like potatoes, carrots, and onions are heavy potassium feeders because potassium drives the transport of sugars to storage organs underground. Tulips, lilies, and other flowering bulbs benefit greatly from potassium for strong stem formation and vibrant blooms. Tomatoes require potassium for fruit quality, flavor development, and disease resistance. Fruit trees need potassium for fruit set, size, and winter hardiness. Note: Avoid using MOP on chloride-sensitive crops like tobacco, strawberries, and some citrus varieties—use sulfate of potash instead.
Dosing Guide

Application Rates

Garden Beds
0.5 lbs per 100 sq ft, worked into the soil and watered thoroughly
Container / Pot
0.5 teaspoon per gallon of soil, mixed into the potting medium before planting
Water Mix
Not recommended for foliar spray — granular soil application only. High salt index can cause leaf burn.
Lawn
3-5 lbs per 1,000 sq ft; apply based on soil test results to avoid salt burn
Trees
0.25-0.5 cups per inch of trunk diameter, applied around the drip line and watered in
Per Acre
100-200 lbs per acre based on soil test potassium recommendations; typically 133 lbs per acre to supply 80 lbs K₂O
Frequency
Every 2-4 weeks

How to Apply

Seasonal Notes

Spring: Apply before planting gardens and when soil has thawed for best incorporation. Ideal time for root vegetables, flowers, and garden prep. Summer: Side-dress heavy-feeding crops mid-season if soil tests warrant additional potassium. Fall: Apply to perennial beds, fruit trees, and lawns to boost winter hardiness and cold tolerance. Winter: Do not apply to frozen ground or dormant plants.
How It Compares

Side by Side

Muriate of potash (0-0-60) is the most economical potassium source at roughly 40-50% less cost per unit of K₂O than sulfate of potash (0-0-50). However, MOP contains chloride which can be harmful to chloride-sensitive crops like tobacco, strawberries, and some citrus. Sulfate of potash provides 50% K₂O plus 17% sulfur without chloride, making it the preferred choice for sensitive crops and saline soils. Compared to greensand (0-0-3), MOP delivers 20 times more potassium per pound and acts immediately rather than over months or years.

Safety & Storage

Wear gloves when handling to avoid skin irritation from the salt content. Avoid contact with eyes. Store in a cool, dry place in a sealed container to prevent moisture absorption and clumping. Keep away from water sources, ponds, and storm drains. Do not apply directly to plant roots or foliage to avoid salt burn. Safe around pets and children once watered into the soil.

Got Questions?

Frequently Asked

  • 0-0-60 fertilizer is muriate of potash (MOP), a concentrated source of potassium containing 60% potash (K₂O) with zero nitrogen and zero phosphorus. It is one of the most widely used potassium fertilizers in agriculture and home gardening. Potassium strengthens plant cell walls, improves drought and disease resistance, and enhances root development. Because it contains no nitrogen or phosphorus, 0-0-60 is ideal for soils that already have adequate levels of those nutrients but are deficient in potassium. Old Cobblers Farm™ Wicked Growth 0-0-60 Fertilizer delivers a powerful, targeted dose of potassium for lawns, gardens, and crops.
  • The common name for 0-0-60 fertilizer is muriate of potash, often abbreviated as MOP. The chemical name is potassium chloride (KCl). The numbers 0-0-60 refer to the NPK ratio — 0% nitrogen, 0% phosphorus, and 60% potash. It is the most economical and widely available form of potassium fertilizer used in both commercial agriculture and home gardens. Old Cobblers Farm™ Wicked Growth 0-0-60 Fertilizer is a premium-grade muriate of potash suitable for a wide range of crops and soil types.
  • 0-0-60 fertilizer provides several key benefits for plants and soil. It strengthens plant cell walls, improving resistance to drought, disease, and cold temperatures. Potassium also enhances root growth, improves water uptake efficiency, and boosts photosynthesis for more vigorous plant development. For fruiting and flowering crops, potassium improves fruit size, flavor, and color. It also helps regulate the opening and closing of stomata, reducing water loss. Because it contains no nitrogen or phosphorus, 0-0-60 allows you to correct potassium deficiency without affecting other nutrient levels. Old Cobblers Farm™ Wicked Growth 0-0-60 delivers these benefits in an easy-to-apply granular formulation.
  • Apply 0-0-60 fertilizer based on soil test results that indicate potassium deficiency. For lawns, the best times are early spring and fall to strengthen root systems and improve winter hardiness. For vegetable gardens, apply before planting or as a side-dress during the growing season when plants are actively developing fruit. For field crops, apply in spring before planting or split between pre-plant and mid-season applications. Always water thoroughly after application to move potassium into the root zone. Old Cobblers Farm™ Wicked Growth 0-0-60 Fertilizer is versatile enough for use on lawns, gardens, and farms year-round.
  • 0-0-60 fertilizer is used to supply potassium to plants when soil tests show a deficiency in this essential nutrient. Common uses include strengthening lawns against drought and winter stress, improving fruit quality in vegetable gardens and orchards, boosting disease resistance in crops, and enhancing root development in newly established plantings. It is especially beneficial for potassium-hungry crops like potatoes, tomatoes, corn, and fruit trees. Turf managers also use it as a fall hardener for lawns. Old Cobblers Farm™ Wicked Growth 0-0-60 Fertilizer is a targeted potassium solution for home gardeners, landscapers, and farmers.
  • To apply potassium fertilizer like 0-0-60, first conduct a soil test to determine the level of deficiency. For garden beds, broadcast 1–2 pounds per 100 square feet and work it into the top 4–6 inches of soil before planting. For established plants, side-dress by sprinkling the granules around the base of plants, keeping it a few inches from stems. For lawns, use a broadcast spreader for even coverage at 2–4 pounds per 1,000 square feet. Always water deeply after application. Old Cobblers Farm™ Wicked Growth 0-0-60 Fertilizer comes in an easy-to-spread granular form for precise, even application.
  • Yes, 0-0-60 fertilizer is excellent for lawns, particularly when soil tests show low potassium levels. Potassium helps turfgrass develop stronger root systems, improves cold and drought tolerance, and increases resistance to diseases like brown patch and dollar spot. Apply 2–4 pounds per 1,000 square feet in early fall to help your lawn prepare for winter, or in spring to support vigorous growth. It pairs well with nitrogen-based fertilizers when your lawn needs both nutrients. Old Cobblers Farm™ Wicked Growth 0-0-60 Fertilizer is a trusted choice for building resilient, healthy turf.

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