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Protassium+ Organic Potassium Sulfate STANDARD FINES 4 LB
Best organic potassium supplement for gardeners creating custom liquid fertilizers.
This is the Protassium+ Organic Potassium Sulfate, available in a 4 LB package of STANDARD FINES. Formulated with a 0-0-50 NPK ratio, it delivers 50% soluble potash and 17% sulfur. The fine screening ensures rapid dissolution, making it ideal for creating liquid fertilizer solutions and suspensions. This product is naturally produced near Ogden, Utah, using an environmentally conscious solar evaporation process that avoids animal manure or waste. It is OMRI certified as organic, supporting sustainable farming practices while providing essential potassium and sulfur vital for enhancing crop quality and yield.
$15.45
Owner Satisfaction
4.6
/ 5
Category Rank
1940
/ 4448
#1940 in Fertilizers
Price vs Category Average
-75%
Below average
Guaranteed Analysis
0025502
/ % Nitrogen (N), % Phosphate (PO), % Soluble Potash (KO)
Who it's for
- Gardeners growing salt-sensitive fruits and delicate ornamentals
- Organic farmers requiring OMRI-certified inputs for their crops
- Growers seeking dual-action potassium and sulfur nutrient support
Who should skip it
- Budget-conscious farmers managing large-scale agricultural operations
- Gardeners looking for the highest concentration of potassium per application
- Users managing soil already prone to high acidity levels
Performance breakdown
Dissolution Speed
Fine screening ensures rapid breakdown for seamless liquid application.
Nutrient Density
High concentration of potash and sulfur maximizes plant health efficiency.
Organic Compliance
OMRI certification guarantees strict adherence to organic farming standards.
Application Versatility
Ideal for creating custom liquid suspensions or specialized fertilizer solutions.
Environmental Impact
Solar evaporation process minimizes waste and avoids harmful synthetic additives.
Chlorine Sensitivity
Low chloride content protects sensitive crops from salt-related stress.
Key Specs
Guaranteed Analysis
0% Nitrogen (N), 0% Phosphate (P2O5), 50% Soluble Potash (K2O)
Secondary Nutrient
17% Sulfur (S)
Maximum Chlorine (Cl) Content
0.8%
Package Weight
4 LB
Derived From
Potassium Sulfate
Particle Size
Fine screened for rapid dissolution
Certification
OMRI Certified as organic
Features
- Fine screening allows for quick and easy dissolution in water
- OMRI certified for use in certified organic production systems
- Naturally produced via solar evaporation from the Great Salt Lake
- Environmentally sound manufacturing process that produces no toxic waste
- Provides a dual nutrient source of potassium and sulfate sulfur
- Helps improve overall crop quality and yield
What customers say
Customers consistently praise this Protassium+ product for its noticeable impact on plant health, especially for fruiting and flowering plants. The organic certification and high potassium content are frequently cited as major selling points, justifying the price point. Users appreciate the fine grade, noting it dissolves quickly and is easy to apply evenly, enhancing the overall ease of use. The consensus highlights strong quality and reliable results, making it a valued investment for serious gardeners seeking superior yields without synthetic additives.
Know before you buy
This ratio indicates that the fertilizer contains 0% nitrogen, 0% phosphorus, and 50% soluble potash. It is specifically designed to provide a concentrated boost of potassium, which is essential for plant health, fruit development, and stress tolerance.
Yes, Protassium+ is OMRI certified, meaning it meets the standards required for use in certified organic production systems. It is produced through solar evaporation and does not contain animal manure or waste.
The fine particle size is specifically engineered to dissolve rapidly in water. This makes it an ideal choice if you are mixing your own liquid fertilizers or creating suspensions for irrigation.
This product is very low in chlorine, with a maximum content of 0.8%. This makes it a safer option for chloride-sensitive crops that might be damaged by standard muriate of potash fertilizers.
In addition to the 50% soluble potash, this product provides 17% sulfur. Sulfur is a vital secondary nutrient that helps plants synthesize proteins and enzymes, further supporting overall crop quality and yield.
Still have a question?
Ask Hayley anything about this product before you decide.