Summer Heat Defense Kit

Name: Summer Heat Defense Kit
Rating: 4.9 (13 reviews)

$57.75 $77

13 Reviews

SAVE $19.25

Summer Heat Defense Kit includes: Dandelion Doom Herbicide Concentrate Refill, Sunday Herbicide Pouch, Motorized Wand Sprayer, NEW Replacement Sprayer, Lawn Aid Heat Stress Prevention Treatment, and Water Focus

Applying water focus liquid lawn treatment

Applying Dandelion Doom Herbicide Concentrate

Custom kit designed to get your lawn in shape for summer.

Nutrients for heat stress tolerance and selective broadleaf weed control.

Free shipping! Ships in 1-2 business days

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Why your lawn needs this:

Nutrients designed to improve grass's heat stress tolerance during the summer months.
Selective weed control targeted towards broadleaf weeds.

What's included:

Lawn Aid: seaweed extract in this preventative fertilizer cultivates greener grass, density and strong roots, while potassium increases heat and drought tolerance. works to keep moisture in your drought-stressed yard. 42 fl. oz. pouch. Covers up to 3,000 sq. ft.
Water Focus: With surfactant for water retention, slow-release nitrogen for sustained growth, potassium for better water management, and molasses to stimulate soil microbes, Water Focus lawn fertilizer helps you grow green grass in a planet-friendly way. 42 fl. oz. pouch. Covers up to 5,000 sq. ft.
Dandelion Doom Herbicide Concentrate Refill: Kills weeds down to the root effectively on broadleaf weeds including: broadleaf plantain, bull thistle, creeping buttercup, dandelion, false dandelion, moss, oxalis, Persian Speedwell, prostrate knotweed, white clover and more. 5 oz. concentrate bottle. Treats up to 224 sq. ft.
Herbicide Pouch + Sprayer: Reusable, easy-fill gallon pouch and premium battery-powered wand sprayer. 1 gallon concentrate pouch + Powerhouse™ wand sprayer.
Hose end sprayer: reusable and designed to deliver the right ratio of water and Sunday nutrients.

In what order should I use products?

Tackle your weeds first with Dandelion Doom. In general, you should avoid applying nutrients to untreated weeds as this may boost their growth. Note: When switching to Sunday from traditional herbicides, you may require a few applications to kill weeds entirely. After weeds are treated, wait at least 24 hours then apply your Sunday nutrients. Apply Water Focus first and then apply Lawn Aid two weeks later for best results.

What do I need to know when applying lawn nutrients?

Only apply to actively growing grass and ensure your lawn is sufficiently hydrated before application. Do not apply when heavy rain is expected.These pouches can be used in combination with your Smart Lawn plan. We recommend waiting 2 to 4 weeks between nutrient applications for best results.

When is it safe for people and pets to go on my lawn after applying?

Our ingredients break down quickly and get to work on your grass and soil. After our products dry, you can get back to playing outside right away!

Where can I apply this product?

Liquid nutrients are appropriate for all of the most commonly grown residential turfgrasses. It’s not formulated for golf course favorites such as colonial bentgrass and creeping bentgrass.

When is the best time to apply Dandelion Doom?

Wait until temps are between 50 and 85 degrees, then spray dry plants from a close distance until drenched. Wait 20-30 minutes, then pull and dispose of remains. Avoid applying if you’re expecting rain within 3 hours. Repeat every 2-3 weeks to control new growth.

Can I use it on my lawn?

Yes! Dandelion Doom is a selective herbicide, meaning that it will kill most broadleaf weeds but not grass, so it is safe to use on your lawn.

How do you apply concentrates?

Use your outside hose to fill the sprayer up to the 1-gallon mark. Pour in a full 5 oz. bottle of Dandelion Doom concentrate into the reusable pouch and attach the wand sprayer. Firmly reattach the lid of the reusable pouch and mix slowly. Apply to broadleaf weeds within your lawn. Do not spray on rocks, concrete or other hard surfaces.

How long do the concentrates last?

The concentrates have a shelf life of approximately two years. After the initial mixing, you will want to make sure it is mixed well again if it sits for 30, or more, days.

What's the coverage area for the concentrates?

Our herbicide concentrates can cover approximately 224 sq. ft. and should be applied to your existing weeds. The coverage area is the total square footage of the weeds themselves, not necessarily the entire lawn.

What’s in it and how does it work?

The active ingredient, iron, is toxic to broadleaf weeds in high doses. Because grass has a much higher iron tolerance, it doesn't get damaged. The areas where you spray may turn a dark green/gray/black color after spraying, but this doesn’t mean the grass will die.

Does Dandelion Doom work on anything else?

Good news! The iron in Dandelion Doom also suppresses lawn diseases such as Dollar Spot, rust, snow mold, and more.

Lawn Aid Label

MSDS Lawn Aid

MSDS Dandelion Doom

Dandelion Doom Instructions

Dandelion Doom Label

Lawn Nutrient Instructions

MSDS Water Focus

Lawn Aid Lawn Treatment Instructions

Prepare your lawn for the hot summer months with Lawn Aid, a lawn treatment that fortifies grass against heat stress and wilting. Learn to apply it in three simple steps.

Read article

Customer reviews

4.9

13 Reviews, 3 Q&As

4.9

13 Reviews, 3 Q&As

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13 Reviews

Updating Results

07/14/25

Angela

10/12/23

Great Green Lawn.

Thanks to the summer defense we have one of the only green lawns in the neighborhood even in the Texas heat.

Location:

Cleburne Texas

Image of Review by Angela on 12 Oct 2023 number 1

Darian

10/12/23

Amazing

Gave my lawn exactly what it needed. Has never looked better!

Location:

San Antonio Texas

Image of Review by Darian on 12 Oct 2023 number 1

Image of Review by Darian on 12 Oct 2023 number 2

Image of Review by Darian on 12 Oct 2023 number 3

Image of Review by Darian on 12 Oct 2023 number 4

Image of Review by Darian on 12 Oct 2023 number 5

Haley

10/13/23

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!

Location:

Kansas City, MO

Jorge

10/13/23

Awesome results

I am glad I found Sunday, my grass is greener than it has ever been. Pretty happy with the results!!

Location:

Anaheim, California

Shari

10/13/23

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 mo...Read More

st of my neighbors don’t have yards in and the weeds are 2” tall. Read Less

Location:

Aurora, CO

Linda

10/13/23

Worked great

We had an amazing lawn all summer. The heat defense showed up just in time!

Location:

Boston, MA

Matthew

10/13/23

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.

Location:

Philadelphia, PA

Paul

10/13/23

It kept my grass going

It kept my grass going strong all summer in 100 degree weather and drought

Location:

Dickinson texas

Edwardo

10/12/23

My grass has grown! Bare

My grass has grown! Bare spots are smaller! I am very impressed! Now to find something for fall!!!!

Location:

Aberdeen NC

Eric

10/12/23

Saved the day

My lawn was looking burnt out. I decided to give it some assistance with the summer heat defense. Needless to say, it saved the day. I will do this again next year for sure.

Location:

Cleveland, Ohio

Duane

10/12/23

Healthier Grass

I have used this several times over the summer and for once my grass did not yellow, get lots of weeds and look bad. Stayed green and my soil PH was much better.

Location:

Brownstown, Michigan

Jeff

10/12/23

Summer Drought

After a rough few months of very lil rain and using this product and watering my yard sprung back to life quickly. Definitely would use it again and recommend it to everyone !!!

Location:

Springfield IL

jason

10/13/23

Good Sized Bundle

The Summer Heat Defense Kit was a great price considering all the items included. The hose attachment is a life saver!

Location:

Santa Maria, CA

Duane G.

08/04/24

Q: Is Dandelion Doom safe to use on the lawn that our small dogs run in?

08/06/24

A: 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.

Andres

06/21/24

Q: Can I apply during summer??

06/26/24

A: Yes, the Summer Heat Defense Kit is designed to be used in the summer months.

Martin

11/12/23

Q: 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?

11/15/23

A: 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.