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Custom kit designed to get your lawn in shape for summer.
Nutrients for heat stress tolerance and selective broadleaf weed control.
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SAVE $23






Your lawn's summer survival plan, in one box
Summer Heat Defense Kit is a summer lawn care kit that tackles heat stress, drought, and broadleaf weeds in one box. Treat weeds with iron-based Dandelion Doom, lock in moisture with Water Focus, then strengthen roots with Lawn Aid. Sprayers included. Pair with your Custom Lawn Plan or add Drought Defense for peak heat.
What makes Summer Heat Defense Kit different
- Heat stress prevention and weed control in one kit
- Iron-based herbicide that won't harm your grass
- Seaweed extract and potassium strengthen roots
- Surfactant helps soil hold water longer
- Sprayers included, hooks up to your hose
- Works on most residential turfgrass types
Ingredients
Lawn Aid (0-0-3): Potassium for heat and drought tolerance. Seaweed extract for deep greening, turf density, and stronger root systems.
Water Focus: Surfactant for water retention. Slow-release nitrogen for sustained growth. Potassium for better water management. Molasses to feed soil microbes and support healthy soil biology.
Dandelion Doom: Iron-based active ingredient, that targets broadleaf weeds in high doses. Grass has a higher iron tolerance, so it stays unharmed. Also helps suppress lawn diseases like dollar spot, rust, and snow mold.
How to use
Apply when temperatures are between 50 and 85 degrees F. Early morning or late evening works best on a well-hydrated lawn.
- Spot-treat weeds first. Mix Dandelion Doom concentrate in the included wand sprayer pouch. Spray dry weeds from a close distance until drenched. Wait 20 to 30 minutes, then pull and dispose of remains.
- Wait at least 24 hours before applying nutrients. Treating weeds first keeps them from feeding on your fertilizer.
- Apply Water Focus. Connect the hose-end sprayer to your hose and the pouch. Distribute evenly in a sweeping motion until the pouch is empty, about 10 to 15 minutes.
- Wait two weeks, then apply Lawn Aid the same way. This spacing gives each product time to do its thing.
- Water thoroughly after each nutrient application. Reapply Lawn Aid every 4 weeks from spring through fall, up to 8 times per year.

Learn more from The Shed
Customer reviews
4.9
Based on 13 reviews
Reviews with media
Popular topics
Great Green Lawn.
Thanks to the summer defense we have one of the only green lawns in the neighborhood even in the Texas heat.
Was this review helpful?Amazing
Gave my lawn exactly what it needed. Has never looked better!
Was this review helpful?Hot week! Green lawn stayed!
We had some really hot (100+) days here for about a week. So glad that we had the summer defense kit so our lawn remained beautifully green!
Was this review helpful?Awesome results
I am glad I found Sunday, my grass is greener than it has ever been. Pretty happy with the results!!
Was this review helpful?Good Sized Bundle
The Summer Heat Defense Kit was a great price considering all the items included. The hose attachment is a life saver!
Was this review helpful?Best Lawn on the Street
Can’t believe how good my lawn looked… especially since it was installed by the home builder with very little top soil… and on very hard ground. It was a hot summer… and I reduced the amount of watering times and days for savings reasons… but my lawn looked better than everyone on the street… with only a few weeds which were hard to avoid since most of my neighbors don’t have yards in and the weeds are 2” tall.
Was this review helpful?Worked great
We had an amazing lawn all summer. The heat defense showed up just in time!
Was this review helpful?Worked Well
Purchased this due to dry summers in Pennsylvania. The product definitely seemed to help my lawn retain its color through all of the heat. Haven’t used the weed killer yet, but it seems like it will be helpful for some newly seeded areas while my lawn comes in full this fall.
Was this review helpful?It kept my grass going
It kept my grass going strong all summer in 100 degree weather and drought
Was this review helpful?My grass has grown! Bare
My grass has grown! Bare spots are smaller! I am very impressed! Now to find something for fall!!!!
Was this review helpful?
Questions & answers
3 questions
Question: Is Dandelion Doom safe to use on the lawn that our small dogs run in?
Louisa D.
Great question! We designed Sunday with safety in mind, so we are extremely selective about not only the ingredients we use but also the lawn and garden techniques we recommend. Our ingredients break down quickly and don’t persist in the environment. After our products dry, you can get back to playing outside right away.
Question: Can I apply during summer??
Louisa D.
Yes, the Summer Heat Defense Kit is designed to be used in the summer months.
Question: I live in Colorado and winters here can get pretty cold. I store all of the Sunday products in my shed, so they have the potential to freeze. Will that effect them when I go to use them next spring?
Louisa D.
We do not recommend storing your Sunday nutrients in a location that may freeze. However, if your pouches do freeze, you may be able to save the nutrients by putting them in direct sunlight to revitalize the nutrients with energy.

