SAVE $22





Heat and drought stress prevention kit
Fortify your lawn against the summer's harsh conditions with our specialized kit.
Wondering what your lawn really needs?
Let's create a custom plan for you.
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
Related products
SAVE $22





Your lawn's summer survival plan
The Summer Heat & Drought Defense Kit is a lawn drought stress treatment that keeps grass green when summer turns brutal. Drought Defense gets water into your soil with a surfactant. Lawn Aid adds potassium and seaweed to strengthen roots. Works on any grass type, no pesticides or harsh chemicals. Pair with a Custom Lawn Plan for year-round care.
What makes Summer Heat & Drought Defense Kit different
- Prevents drought stress and brown patches
- Two-product system for hydration and recovery
- Hose-end sprayer for easy, even coverage
- Works on all grass types, warm and cool season
- Surfactant helps water reach roots, not runoff
- Zero pesticides, zero burn risk
Ingredients
Drought Defense (0-0-1)
Wetting agent: A surfactant that helps water penetrate dry, compacted soil instead of running off. Your soil stays hydrated longer, which can help reduce water use over time.
Seaweed and potassium: Work together to help your grass handle high temperatures and recover from heat stress. Potassium strengthens cell walls so grass holds up better in extreme conditions.
Humic acid: Helps your lawn absorb more of the nutrients already in your soil. Think of it as making everything else in the formula work harder.
Lawn Aid (0-0-3)
Potassium: Supports overall plant health and heat tolerance. Helps grass stay strong when temperatures climb.
Seaweed: Promotes deep greening, thicker turf density, and stronger root growth. This is what helps fill in thin or stressed areas.
How to use
Apply before summer heat peaks, ideally in the early morning or evening when temperatures are between 50 and 85 degrees F.
- Start with Drought Defense. Attach the sprayer to one of the Drought Defense pouches and connect to your hose. Apply at the recommended rate for your lawn size (each pouch covers up to 2,500 sq ft). Let it dry fully, which takes 4 to 24 hours.
- Follow with Lawn Aid. Attach the sprayer to the Lawn Aid pouch and apply as a spot treatment to areas that look stressed, thin, or are drying out. Each pouch covers up to 3,000 sq ft. Let it dry fully.
- Reapply Drought Defense after 4 to 6 weeks. Use the second Drought Defense pouch to keep your lawn's hydration up through mid-summer.
- Use any leftover product. If you still have Lawn Aid or Drought Defense remaining, reapply every 4 to 6 weeks until the pouches are empty.
- Save the sprayer. It's reusable for future Sunday treatments.

Learn more from The Shed
Customer reviews
4.2
Based on 50 reviews
Reviews with media
Hot Sommer
we had a very hot summer. so hot that we had a record number of 100 degree or more this summer. put a lot of work on the lawn to see it burn and dry up. very happy with results
Was this review helpful?90 Days over 100
Here in Austin, Texas we had 90 days over a 100. I used this to help my lawn survive. Using this I was able to use less water.
Was this review helpful?Left Waxy Layer
I believe this left a waxy coating on my lawn that turned it hydrophobic.
Was this review helpful?Very pleased!
This treatment did wonders for making the lawn thicker. We have bermuda grass and 5 dogs, so I'm very happy with the results. Next year I won't wait as long to order.
Was this review helpful?Worked perfectly in Texas. Almost
Worked perfectly in Texas. Almost instantly i could see the yellow turn shades of green. I first watered the lawn and applied and very happy with results. All Sunday products are great.
Was this review helpful?Lawn Aid Heat Stress Application
I really didn’t see a difference when using the Lawn Aid Heat Stress application. It seemed like my grass looked worse after using the product. The treatment did not work for my lawn as I expected.
Sunday
We're sorry to hear that your results weren't as expected! Have you connected with your Yard Advisor yet? They're here to help you make the most of your products. You can reach them at [email protected] or by calling 415-903-6932.
Was this review helpful?Sunday
Grass handled the hardest heat summer here in Texas with no issue. Great Product!
Was this review helpful?Hot Florida Summers
Product seemed to work well. I live in Florida and we had an unseasonably dry summer this year, but my lawn still thrived with minimal supplemental watering. Wil definitely use again next year.
Was this review helpful?Rough Summer
This really helped my lawn to bounce back after a rough Summer. As well as hold it's own and not get any worse. I have hope now that it will flourish this Fall.
Was this review helpful?Helps keep the lawn strong during the heat
During the hottest months the treatment seemed to keep my lawn looking good.
Was this review helpful?
Questions & answers
5 questions
Question: Can this be used on new grass seed?
Jeff McConathy
Great question! Short answer: it’s best to wait before using the Summer Heat & Drought Defense Kit on new grass seed. Those stress support pouches are designed for established, actively growing lawns, and they work best when grass can actually take up nutrients and moisture efficiently. If your seed hasn’t germinated or is still very young, it won’t benefit much yet 🌱. In fact, these products are meant to be more preventative for heat and drought stress, not for early-stage seedlings . Here’s what we recommend instead: Focus on consistent, light watering to keep the soil moist during germination Let the new grass establish for a few weeks after sprouting Once it’s been mowed at least once or twice and is actively growing, you’re good to apply heat and drought support You’re on the right track thinking ahead about summer stress 💪 If you want, we can help you time that first application based on your grass type and local weather so you get the most out of it.
Question: Do I add both within 48 hours (Drought Defense and Lawn Aid) or 4 weeks apart?
Jeff McConathy
We recommend waiting at least 7 days between fertilizer applications for best results!
Question: Does Lawn Aid help when you already have a section of grass showing stress from the heat?
Jeff McConathy
Lawn Aid is designed to prepare your lawn for hot summer months. We recommend applying when grass is actively growing in early spring, typically April to June.
Question: My lawn have lots of crabgrass and weed what you have for rescue lawn
Louisa D.
Good question! Sunday nutrients will improve soil health, encouraging thicker and fuller grass growth. However, our fertilizer pouches/bags do not contain any herbicides, so they alone will not directly treat existing patches of weeds. To help with those pesky weeds, we offer a variety of weed control products. They can be added in a recurring fashion (as part of our plan bundles), or as an add-on from our Shop here: https://www.getsunday.com/shop/category/lawn-care/weed-killer
Question: For Sant. Augustine fertilizante in Orlando Florida
Louisa D.
Our Sunday approach focuses on building soil health and boosting grass growth. Because of this, our nutrients work with just about every grass type out there!
