Potassium Sulphate 0-0-50 | Turf Strength & Stress Support

The Lawn Medic | High-potassium fertilizer that improves turf strength and stress tolerance.

★★★★★ 4.8 stars on over 5,000 orders

Potassium Sulphate 0-0-50 | Tough Turf Support

$39.00

SGN 150 Mini Prill Made for Canada Pro Grade Spreader Ready

"The fertilizer worked amazing. Lawn was super green all year. Will definitely be purchasing again." - Brent S.

Bag Size: 2kg

2kg
5kg
10kg

Product variants

Coverage (selected size)

Covers up to 1470 sq ft

In stock, ready to ship

Pickup available at Pickup Location UPS STORE

Usually ready in 24 hours

Mini Prill - SGN 150

Featuring smaller granule/prill size than big box store fertilizer producing faster and more even results as your fertilizer reaches your soil more quickly.

Toughen up your turf without adding nitrogen. Potassium sulphate 0-0-50 supports stress tolerance, wear resistance, and overall turf strength—ideal for summer, fall, and high-traffic lawns.

0-0-50

NPK

Mini - SGN 150

Prill Size

Granular

Application Type

Best For

Drought-prone lawns, sports traffic, fall feeding, and balancing high-nitrogen programs.

What Makes It Different

This premium potassium fertilizer supplies potassium without adding excess nitrogen. Potassium strengthens plant tissue, improves water regulation, and enhances resistance to environmental stress. The sulphur component also contributes to healthy plant metabolism. This makes potassium sulphate a valuable tool for strengthening turf without promoting excessive growth.

Application Rate

Low Risk. Use when required. Recommended use based on soil test.

Minimum Guaranteed Analysis

• Soluble Potash (K₂O) – 50%
• Sulfur (S) – 17%

Product Details

NPK | 0-0-50
Nitrogen Release | Balanced | Works to quickly to improve soil composition
Prill Size | Mini Prill | SGN 150 | Mini sized prills for more even applications
Application Type | Granular | Apply with any lawn spreader

Storage & Handling & Safety

Storage

We recommend keeping your seed in a cool dry location, especially after opening. This helps to maintain a high germination rate for an extended period of time.

Handling

Seed is safe to handle. However if you are sensitive to airborne particles you may want to wear a mask when adding your seed to a spreader for instance.

Shipping & Returns

Shipping

We ship Canada wide. Most orders are shipped with UPS. Canada Post is used for some locations.

Shipping on Grass Seed is always free. Shipping on fertilizers is calculated based on weight.If your order combines seeds and fertilizers you will only be charged for the weight of the fertilizer. We do our best to offer a balance between fast shipping and reasonable shipping rates.

We strive to ship all orders within 24hrs (48hours max).

Please reach out to use if you have any questions.

Returns

All of our products can be returned within 30 days as long as it is unopened/unused.

If you have a concern with your product after opening it please reach out to use as we always work to find a solution and rectify any issues.

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Valid on individual fertilizers only. Grass seed is always free shipping.

Pairs well with

In stock! Ships within 1-2 business days.

Expedited shipping on all orders.

Only professional grade fertilizers.

30-Day Return Policy

Potassium Sulphate 0-0-50 | Tough Turf Support

2kg

$39.00

A Better lawn starts here

Don't Take Our Word For It

See what our happy customers are saying about how The Lawn Medic helped their lawns.

See All Our Reviews

Expedited Shipping on All Orders

Why This Fertilizer?

Potassium sulphate is a premium potassium fertilizer used to strengthen turfgrass and improve stress tolerance. Potassium regulates water balance within plant cells and plays a major role in improving resistance to drought, disease, and heavy traffic. The sulphur component also contributes to healthy plant metabolism. This fertilizer is commonly used when turf requires additional potassium to improve durability and maintain strong growth under challenging conditions.

Technical Details

Potassium plays a central role in turfgrass stress physiology. It regulates osmotic balance within plant cells, allowing turf to better control water movement during periods of drought or heat stress. Research conducted through the Michigan State University Turfgrass Program has demonstrated that adequate potassium nutrition improves drought tolerance and wear resistance in cool-season turf species such as Kentucky bluegrass and perennial ryegrass.

Potassium sulphate provides potassium in a highly soluble form while also supplying sulphur, a secondary nutrient required for protein synthesis and enzyme activity. Studies summarized by the Penn State Center for Turfgrass Science indicate that maintaining proper potassium levels can significantly improve turf resilience during environmental stress while supporting overall plant vigor.

See the difference

Geoff D.

"I used seed and fertilizer from The Lawn Medic in the Spring. The transformation over about 5 weeks was incredible. The pictures tell the story. The new lawn came in thick and green and it has stayed that way all year. No weeds. Strong growth."

Testimonials

"Best result I've ever had in reseeding my lawn. No more big box branded lawn seed with pathetic results. Next fall will be the backyard's turn."
— Jose C.

"Lawn looks freaking awesome in December 😄😄 Will definitely be ordering again in the spring."
— Daryl F.

"Despite this summer’s heat and drought, the lawn stayed healthy. The seed quality is noticeably better than what I’ve bought from big-box stores."
— Ryan C.

FAQs

Please read our FAQs page to find out more.

What makes your products better?

All of our products, including our seeds and fertilizers, were developed for professional uses. This means that you are truly getting the best of the best when it comes to lawn care products. Forget the big box store products and try what the pros use.

Do you provide guides on how to use your products?

Yes, of course we do. Take a look at our Guides page. We will be adding more guides and helpful tools soon as well.

Can you help me decide what I need?

Yes! We are here to help. Contact us anytime with your questions and we will get back to you within 1-2 days with some suggestions. We also have our Guides page which can answer some questions, and we have more helpful tools coming soon.

How can I get your products?

We ship Canada wide by UPS and Canada Post (it depends on the location). Every shipment is expedited to arrive as soon as possible, and ships within 1-2 days. We also have a pickup location in Burlington, Ontario.