Fall Lawn Fertilizer 8-15-30 | Winter Prep & Root Support

The Lawn Medic | High-potassium fall fertilizer that strengthens turf and prepares lawns for winter stress.

★★★★★ 4.8 stars on over 5,000 orders

Fall Lawn Fertilizer 8-15-30 | Winter Prep

$29.00

Pro Grade Made for Canada SGN 200-250 Regular Prill Spreader Ready Slow Release Nitrogen

"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 1463 sq ft

In stock, ready to ship

Pickup available at Pickup Location UPS STORE

Usually ready in 24 hours

Slow Release Formula

Featuring an advanced slow release coating producing long last results and on going growth.

Set your lawn up for a stronger spring. This 8-15-30 fall formula focuses on root development and winter hardiness—helping turf store energy, improve durability, and green up faster next season.

8-15-30

NPK

Reg - SGN 200-250

Prill Size

Granular

Application Type

Balanced - 60% Slow Release

Nitrogen Release

Best For

Late-season feeding, post-aeration recovery, and fall overseeding projects.

What Makes It Different

Unlike spring fertilizers that focus primarily on growth, this fall formula prioritizes root development and stress tolerance. The elevated potassium strengthens turf cells and improves winter survival, while phosphorus supports continued root growth during cooler weather. This nutrient balance helps lawns store energy and recover more quickly when growth resumes in spring.

Application Rate

1.4kg (3lbs) to 2.3kg (5lbs) per 1000sqft per application

Minimum Guaranteed Analysis

• Total Nitrogen (N) – 8%
• Available Phosphoric Acid (P₂O₅) – 15%
• Soluble Potash (K₂O) – 30%

Product Details

NPK | 8-15-30
Nitrogen Release | Balanced | 60% Slow Release Nitrogen
Prill Size | Regular Prill | SGN 200-250 | Standard prill size for all 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

Fall Lawn Fertilizer 8-15-30 | Winter Prep

2kg

$29.00

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?

Fall fertilization is one of the most important steps in maintaining a healthy lawn, and this formula is designed specifically for that purpose. The elevated potassium level helps strengthen cell walls and improve turf resistance to cold temperatures, drought, and disease. Phosphorus supports continued root development during the cooler fall months, allowing lawns to store energy for the following spring. Applying a fall fertilizer helps turf recover from summer stress while preparing it to survive winter conditions and emerge stronger when growth resumes in spring.

Technical Details

Fall fertilization is widely recognized as one of the most important nutrient applications in cool-season turfgrass management. During autumn, turfgrass plants allocate energy toward root development and carbohydrate storage rather than leaf growth. Research conducted through the University of Wisconsin Turfgrass Science Program has shown that fall fertilization improves winter survival and enhances spring green-up.

High potassium levels strengthen plant cells and improve resistance to cold temperatures and environmental stress. Phosphorus supports continued root growth while turfgrass remains metabolically active in cooler conditions. Studies summarized by the Penn State Center for Turfgrass Science indicate that fall nutrient programs significantly improve turf resilience and recovery following winter dormancy.

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.