Best Sulfate Of Potash For Lawns: Compare 9 Options

#1 · Best Overall

1. Dibbs Farms Sulfate of Potash

• Form: Granules
• Weight: 50 lb

Best for: Measured Lawn Broadcast Use.

Why it ranks #1: It specifically lists lawns, comes as granules, and provides a clear use rate of 0.5 pounds per 100 square feet with watering-in directions.

A stated application rate of 0.5 pounds per 100 square feet makes this Dibbs Farms granular SOP unusually direct for planning a measured lawn treatment. The listing also names lawns among its uses and says to spread the granules over the treatment area and water them in.

The 0.5-pound-per-100-square-foot rate gives lawn owners a concrete starting point for calculating treatment amounts, while the spread-and-water-in directions describe a simple broadcast workflow. Granular form suits surface application, and the product is intended for potassium-low soils across lawns, vegetables, flowers, and shrubs. Its listed benefits include stronger roots, stems, and tubers, with correction of potassium deficiency noted for several crops; use is therefore tied to potassium need rather than general feeding alone.

Skip it if you are not treating soil identified as low in potassium; the listing specifies use in potassium-low soils.

This fits lawn owners who want a measured granular application and can follow the stated rate and water-in directions. Its listed use is for potassium-low soils, so it is not positioned as a general-purpose lawn feed.

Listed on Amazon as: Sulfate of Potash 0-0-50 Granular Fertilizer (50 Lbs.)

#2 · Low-Chloride Pick

2. Supply Solutions Golden K-Max

• Form: Granules
• Weight: 5 lb

Best for: Low-Chloride Lawn Nutrition.

Why it ranks #2: This granular 0-0-50 product explicitly suits lawns where chloride sensitivity may matter and supplies sulfur alongside potassium.

Potassium sulfate paired with 17% sulfur gives Golden K-Max a two-nutrient profile for lawns and other plantings where chloride sensitivity matters. The granular form supports an even-broadcast workflow, while its listed uses also include vegetables, fruit trees, and ornamentals across indoor and outdoor gardens.

The 0-0-50 plus 17% sulfur analysis combines potassium and sulfur without adding nitrogen, fitting a nutrient plan that needs potassium without increasing nitrogen input. Granules are suited to the listed broadcast application, while the low-chloride formula is identified for chloride-sensitive situations that may include lawns. The product information advises avoiding application during drought unless irrigation is available, so watering capacity is an important part of planning its use and storage should be dry and sealed between applications.

Skip it if you cannot irrigate during drought conditions; the product information specifically advises against applying then without water available.

This fits growers seeking granular potassium and sulfur for lawns or mixed outdoor plantings, particularly where low chloride matters. Factor irrigation into application timing, and use other nutrients separately if your plan calls for them.

Listed on Amazon as: Supply Solutions | 0-0-50 Plus 17% Sulfur | Golden K-Max Sulfate of Potash (SOP) – Granular Fertilizer | High Potassium Plant Fertilizer for Indoor and Outdoor Garden – Stronger Roots (40 Pounds)

#3 · Highest Potash Analysis

3. Old Cobblers Farm Wicked Growth

• Form: Granules
• Weight: 5 lb

Best for: High-Potassium Lawn Granules.

Why it ranks #3: Its granular sulfate of potash is labeled for lawns and gardens, with a stated 0-0-60 analysis and no nitrogen or phosphorus.

A 0-0-60 analysis supplies 3.0 pounds of actual K2O per five-pound bag, making Old Cobblers Farm Wicked Growth a high-potassium option for correcting potassium-deficient soils. Its chloride-free potassium sulfate granules are listed for lawns, gardens, vegetables, and fruit trees.

The 0-0-60 analysis and stated zero nitrogen and zero phosphorus let buyers target potassium without changing those parts of an existing nutrient plan. Its 100% potassium sulfate and chloride-free description are relevant for chloride-sensitive crops, while the granular form fits a dry application routine across lawns and gardens. The listing also associates the product with stronger plant cell walls and roots. Because its analysis differs from 0-0-50 products, buyers should account for that concentration when selecting an application plan.

Skip it if you specifically need a 0-0-50 analysis; this product is labeled 0-0-60 and supplies a more concentrated potassium analysis.

A strong fit for lawn owners targeting potassium deficiency without adding nitrogen or phosphorus, especially where chloride sensitivity matters. Its 0-0-60 analysis differs from 0-0-50, so match the product to your application plan.

Listed on Amazon as: Old Cobblers Farm Wicked Growth Potassium Fertilizer – Sulfate of Potash Granular Plant Food for Lawns, Gardens, Vegetables & Fruit Trees (5 lbs | 10 lbs | 15 lbs | 20 lbs), 5 lbs

#4 · Fast-Dissolving Powder

4. Supply Solutions Sulfate of Potash

• Form: Powder
• Weight: 50 lb

Best for: Water-Soluble Garden Powder.

Why it ranks #4: The listing names lawns as a use and describes an ultra-fine, highly soluble powder, though its description also references a blend.

Ultra-fine powder that dissolves quickly in water gives this Supply Solutions potash a practical fit for buyers mixing fertilizer for indoor or outdoor gardens. The listing names lawns, flowers, fruit, and gardens among its uses, while its 0-0-50 positioning centers the product on potassium.

The ultra-fine powder is described as highly soluble and quick to dissolve, supporting water-based mixing for the listed foliar and spray applications. That format can suit gardeners who prefer mixing rather than spreading granules, and the product is presented for flowers, crops, fruit, and lawns. The description also refers to a blend of sulfate of potash, muriate of potash, and potassium, so buyers should consider that stated composition when choosing it for a particular nutrient plan.

Skip it if you specifically need a product described only as sulfate of potash; its description also names muriate of potash in the blend.

Consider it if water-mixing and spray use suit your lawn or garden routine, and you want a potassium-focused powder for varied plantings. Its stated blend includes muriate of potash, a relevant distinction for composition-sensitive buyers.

Listed on Amazon as: Supply Solutions Sulfate of Potash 0-0-50 Fertilizer – Potassium Fertilizer for Indoor, Outdoor, Flowers, Gardens, Fruit, Lawn – Plant Food with Plant Nutrients (50 Pounds)

#5

5. CFUTABOH High Potassium Fertiliser

• Form: Fine Crystals
• Weight: 8 oz

Best for: Small-Scale Potassium Feeding.

Why it ranks #5: Its 0-0-50 fine crystals are described for lawns and gardens, and the listing identifies the sulfate of potash as chloride-free.

A chloride-free 0-0-50 formula supplies concentrated potassium without adding nitrogen or phosphorus, making CFUTABOH a focused option for lawns and mixed garden plantings. Its fine-crystal form suits buyers seeking a small-format potassium supplement for beds, pots, lawns, and greenhouse plants rather than an all-purpose fertilizer.

The 0-0-50 analysis keeps the nutrient input centered on potassium, which the listing says reinforces plant cell walls and supports drought and frost tolerance. Chloride-free composition is relevant for plantings where chloride is a concern, while fine crystals offer a different handling format from granular lawn products. The listed uses span lawns, pots, beds, and greenhouse plants, so one product can serve several planting areas; it does not supply nitrogen or phosphorus for a broader feeding program.

Skip it if you need nitrogen or phosphorus alongside potassium; this product supplies concentrated potassium only, so it cannot cover those nutrients.

Choose it for lawn or garden areas needing a chloride-free potassium-only supplement, especially when fine crystals suit your application routine. Its 0-0-50 analysis leaves nitrogen and phosphorus to another part of your nutrient plan.

Listed on Amazon as: High Potassium Fertiliser 0-0-50 Sulphate of Potash, Potash Fertiliser for Garden & All Plants (1 LB)

#6

6. VGNX Hydro Granular SOP

• Form: Granules
• Weight: 5 lb

Best for: Granular Fertigation Users.

Why it ranks #6: Uniform 0-0-50 granules provide potassium and sulfur, but the supplied details describe use for all plants rather than lawns specifically.

Uniform granules paired with a stated 0-0-50 analysis and 17% sulfur give VGNX Hydro’s sulfate of potash a clear nutrient profile. The listing names fertigation and all plants as intended uses, connecting its dry granular format to growers managing potassium and sulfur through their plant-feeding routine.

The 0-0-50 analysis identifies potassium as the primary supplied nutrient, while the listed 17% sulfur adds a second stated component in the same product. Uniform granules provide a consistent dry format for handling, and the product is explicitly presented for fertigation as well as all plants. That makes it relevant to buyers choosing a granular SOP for a feeding workflow, although the supplied information does not give a specific lawn application rate or mixing procedure.

Skip it if you need a product with a stated lawn rate or detailed fertigation mixing instructions; those directions are not included here.

This suits growers who want uniform granules with potassium and sulfur for a fertigation-oriented or general plant routine. Lawn users should have an application plan, since the listing does not provide a specific lawn rate.

Listed on Amazon as: Sulfate of Potash 0-0-50 Granular SOP Granular Potassium sulfate Premium fertilixer for, fertigation and All Plants 5 lb

#7

7. The Seed Supply SOP Powder

• Form: Powder
• Weight: 20 lb

Best for: Irrigation-System Powder.

Why it ranks #7: Its solution-grade powder lists 52% soluble potash and 18% sulfate sulfur, but the description focuses on crops and irrigation systems.

A solution-grade powder ground to minus 200 mesh is the defining feature of The Seed Supply SOP, enabling a fine product intended to dissolve uniformly into irrigation systems. Its stated analysis gives 52% soluble potash and 18% sulfate sulfur, useful details for buyers planning nutrient delivery through water.

The minus-200-mesh, ultra-fine powder is described as dissolving uniformly and integrating into irrigation systems, supporting a water-delivery workflow rather than a conventional granular spread. Its guaranteed analysis lists 52% soluble potash and 18% sulfate sulfur, helping buyers account for both stated nutrient components in a feeding plan. The listing calls it solution grade and organic, but provides no lawn application rate, so users will need application guidance suited to their own irrigation setup.

Skip it if you need a stated broadcast rate for a lawn; the listing focuses on solution-grade irrigation use and gives no lawn rate.

Choose this for irrigation-based feeding when a finely ground solution-grade SOP fits your system and its stated analysis suits your plan. It is a less direct choice for buyers seeking a ready-to-follow lawn broadcast rate.

Listed on Amazon as: SOP 0-0-50 | Sulfate of Potash Solution Grade Ultrafine Fertilizer Powder (5 Pounds)

#8

8. Cz Garden Supply Organic SOP

• Form: Powder

Best for: Organic-Listed Garden Potash.

Why it ranks #8: This OMRI-listed, low-chlorine 0-0-50 powder is aimed at plants and flower gardens, with no specific lawn application guidance provided.

OMRI listing is the defining feature of Cz Garden Supply’s 0-0-50 sulfate of potash, allowing use in certified organic production under the stated USDA program conditions. The water-soluble, low-chlorine powder also suits gardeners wanting potassium for flower beds and other garden plantings.

The OMRI listing identifies this mineral fertilizer for use in certified organic production or food processing and handling under USDA National Organic Program regulations, giving organic growers a clear suitability reference. Its water-soluble powder can be incorporated into a watering workflow, while the low-chlorine description supports use where chlorine content is a concern. The listing also associates the fertilizer with crop color, texture, taste, and more even ripening; it supplies potassium rather than a complete nutrient blend.

Skip it if you need a fertilizer that also supplies nitrogen or phosphorus; this 0-0-50 product is a potassium-focused mineral amendment.

A fitting choice for organic gardeners needing a soluble potassium source for flowers or crops, provided their use follows the stated organic-program conditions. Its potassium-only analysis means other nutrients must come from elsewhere.

Listed on Amazon as: Organic Sulfate of Potash 0-0-50 Made in USA – OMRI Listed – Water Soluble SOP Potassium Plant Food for Plants & Flower Gardens – 3LB Low Chlorine Fertilizer. Enhances Color & Taste!

#9

9. Alpha Chemicals Potassium Sulfate

• Form: Powder
• Weight: 16 oz

Best for: Simple Potassium-and-Sulfur Source.

Why it ranks #9: It is a general potassium and sulfur source, but its listing gives no lawn-specific use, analysis, application rate, or format advantage.

Potassium and sulfur are the two stated nutrient roles of this Alpha Chemicals sulfate of potash, making it a straightforward option for buyers seeking those nutrients without a long list of additional claims. The powder form suits users who prefer a fine product for measured fertilizer preparation.

The listing identifies potassium and sulfur as the product’s nutrient contribution, so it can fit a plan that calls for those elements without relying on a broader nutrient blend. Its powder form supports measuring and mixing into a fertilizer workflow, though the supplied information does not state an analysis or application rate. A resealable bag with a tear-off opening supports opening and storing the product between uses, making it a simple option for smaller-scale garden routines.

Skip it if you need a stated potassium percentage or application rate to calculate an exact lawn application; neither is provided in the listing.

Choose this for a simple powder source of potassium and sulfur when you can determine use from your own nutrient plan. It is a less informative fit for buyers requiring a stated analysis or lawn rate.

Listed on Amazon as: 1 Pound – Potassium Sulfate – Sulfate of Potash