LAWN PLAN EXCLUSIVE

Heat-season backup in one spread.
A 21-0-3 NPK granular fertilizer that improves water movement and moisture retention for steady greening and summer-season support, in one easy spread.
We're committed to making sure Sunday works for you and your home. Need a replacement? Or help troubleshooting an issue? Our experts are here for you. Learn more
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LAWN PLAN EXCLUSIVE

Meet the granular built for hot, dry days
Exclusively available only in Sunday Lawn Plans
When temps rise and rain dips, this blend keeps your lawn on track. Premium ingredients support healthy growth and greener color, while the added surfactant helps water move into soil and reach roots more evenly, especially in arid regions. We also added leaf compost to support healthier soil. (Bet you didn’t know granular did that.)
One spread. One watering. Greener grass made simple. (We kept it humble. Your lawn won’t.)
The good stuff inside
- Zero pesticide fertilizer —everything you need, nothing you don't
- Universally loved by climates and grasses
- Heat stress tolerance from potassium
- Steady growth and green-up with nitrogen, calcium and sulfur
- Builds organic matter from recycled leaf compost
How to use
Fill the spreader. Spread evenly for full coverage. Water in. Let dry. Go brag.
How soon will I see results with Heat Defense Granular?
With good moisture, you should notice a greener, thicker lawn in about 1 to 2 weeks.
Is Heat Defense Granular safe for all grasses?
Sure is. While designed with the arid West in mind, this product can be used on any lawn or grass type.
When should I apply Heat Defense Granular?
Late spring is prime time, right before summer heat. You can also use it ahead of a forecasted dry spell.
Will Heat Defense Granular let me water less?
No. It improves water movement and soil moisture behavior but does not reduce irrigation needs. To reduce watering needs, add Sunday’s Drought Defense into your normal routine. You can use it alongside any Sunday lawn fertilizer, liquid or dry.
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Granular Lawn Fertilizer Instructions
Your lawn is a living thing. Soil, roots, microbes, the whole crew. Sunday's granular fertilizers feed that system slowly, so your grass grows steadily (instead of spiking and stalling). Here's how to put them to work
Read articleCustomer reviews
I was skeptical, however seems to be working. See before and after below.
It is an immense relief to find a yard care option that works with nature not against it. No more green short term facade, with poisoning long term destruction. And it's actually fairly affordable?!?!?! Wow. Mindblown. Thank you very much.
So far so good can’t wait for next season to see how everything is holding up? Time will tell.
I started with a weed infested lawn. I had tons of questions and the guys were more than helpful with their responses. Will even went as far as making video responses to a video I sent showing my lawn's status. Super happy with the service.
This is my first year using the Sunday System. I have unsuccessfully tried the DIY yard treatment granules from the big box stores and tried hiring a truly green service to apply for me, but no success with either. From the pictures, you can see that for the first time in ten years, I am finally mak...
My lawn was close to impossible to improve, let alone maintain. Huge patchy areas, tons of weeds, always dry looking despite the constant watering; nothing was helpful from the store bought products. I decided to try Sunday, in June. Sent my soil sample in started using the plan sent fertilizers im...
I started using Sunday at the beginning of the summer and my yard is a lawn now. It's beautiful. And very very thick!!
I love that the products just show up, I don't have to mark dates on my calendar or research what I'm supposed to be doing now. Getting the emails telling me which product to use now; and having Sunny to ask questions has been a game changer. I have been following the plan for about 6 months now and...
We live in a wooded area where I am always fighting to get the grass to grow between the board of the yard and the forest. The fertilizer I received in my first box I feel made a difference with the existing grass we already had. With our new puppy I did utilize the urine resistance seed to get the ...
I do love using Sunday products on my too large lawn! I found them to be economical too compared to the dry fertilizers that never spread as far as they promise
























