Summer is brutal on lawns.
It's June. The temperature's climbing. By mid-July, lawns up and down your street will start to fade — yellow patches creeping in, weeds thriving in the heat while the grass struggles, and that one shaded corner where moss never quite gives up.
Most people do nothing until it's too late. They watch the lawn brown out, write it off as "summer damage," then spend September trying to repair what could have been prevented in five minutes back in June.
One bag protects your lawn from now through to autumn. Apply before the heat does the damage.
Beat the Heat. Feed the Grass. Kill the Weeds.
One application carries your lawn through the hottest months. Heat-stress protection keeps grass green. Selective weed killer takes out the weeds that thrive in summer. Moss killer finishes off the damp shaded corners. Just shake it on.
Shake. Soak. Survive.
Three steps. Five minutes. Your lawn sorted through the heat.
Shake
Scatter the granules evenly across your lawn by hand. No spreader needed, no complicated equipment. Just you and the bag.
Soak
Water it in thoroughly with a sprinkler — or apply before rain and let the weather do the work. Granules dissolve and start working within hours.
Survive
Moss blackens in hours. Grass colour holds through the heat. Weeds die in 2-4 weeks. Your lawn stays green while the street goes brown.
What You're Actually Getting
Three products in one bag. One application. One price.
Heat-Stress Protection Feed
Balanced nitrogen designed for summer. Sustains growth without forcing it, so your grass keeps its colour and resilience through heatwaves and drought stress instead of going dormant and turning yellow.
Selective Weed Killer
Targets the weeds that thrive in summer heat — dandelions, clover, creeping buttercup, plantain — while leaving your grass completely unharmed. Weeds yellow, curl, and die. Your lawn fills the gaps.
Moss Killer
Iron sulphate complex that takes out the moss in damp shaded corners where the sun never quite reaches. Turns black within hours. No raking required. Grass grows through it.
Bought separately, you'd spend around £25 on a summer feed, £25+ on a selective weed killer, and £20+ on a moss killer. That's £70+ in products, three separate applications, and three trips to the garden centre.
Or: one bag, one application, from £29.99.
What You'll See (And When)
The transformation happens in stages. Here's what to expect.
From Heatwave to Held Up
Real results from real customers. 4.8 out of 5 stars.
"Every summer our lawn turns brown and crispy. Applied Good Grow Summer Treatment in early June and even during the July heatwave our lawn stayed green. A healthy dark green while every other lawn on the street was straw coloured."
Caroline E. - Verified Buyer
"Water restrictions in our area over summer and I was worried the lawn would suffer. Applied Good Grow before the restrictions kicked in. The lawn stayed green and healthy throughout the dry spell while untreated lawns on our street went completely brown."
Vanessa C. - Verified Buyer
"We host a lot of garden parties in summer and the lawn always lets us down by August. This year I applied Good Grow in June and the lawn looked brilliant right through to September. Thick, green and weed free. Several guests asked what we had done differently."
Richard P. - Verified Buyer
Quick Answers
"When should I apply it?"
June to August is ideal. Apply when grass is actively growing. Earlier in the window gives you the longest protection through the hottest months.
"Will it scorch my lawn in hot weather?"
Not when used correctly. Water it in well after application and avoid applying in temperatures above 25°C unless you can irrigate. Early morning or evening application is best in summer. Follow the rate (35g per m²) and you're fine.
"Can I apply during a hosepipe ban?"
Yes — just apply before rain is forecast and let the rain water it in naturally. Customers have used it through water restrictions and seen their lawn stay green while neighbours' went brown.
"Is it safe for my dog?"
Completely. Once watered in and the lawn is dry (usually a few hours after rain or watering), it's safe for pets and children. We designed it that way because we have dogs too.
"Do I need a spreader?"
No. Shake it from the bag by hand. You can use a spreader if you prefer, but it's not necessary. Apply at roughly 35g per square metre.
"Can the kids still play on it?"
Yes — and the treatment actually helps the lawn handle foot traffic better by strengthening the grass. Customers have reported lawns surviving six weeks of paddling pools, football, and BBQs without going to mud.
"Can I overseed at the same time?"
No. Wait 4 weeks after applying this treatment before sowing grass seed. The weed killer component can affect germination. For best results, overseed in autumn when temperatures cool.
"Will my lawn look worse before it gets better?"
The moss will turn black. That's it working. Some people find this alarming but it's completely normal. It breaks down naturally over the following weeks and your grass grows through it.
"What if it doesn't work?"
Then you get your money back. Every penny. 60-day guarantee, no questions asked. Keep reading.
Green Lawn or Your Money Back
Try it on your lawn for 60 days. If your lawn doesn't stay greener through summer, if the weeds don't die back, if the moss doesn't break down — or if you're unhappy for any reason — contact us and we'll make it right. If we can't, you get a full refund. No questions. No hassle. No risk.
Complete the Set
Your lawn needs different things at different times of year.
NEXT SEASONAutumn Lawn Treatment£59.99When summer ends, switch to the autumn formula. Root-strengthening nutrients and continued weed control to prepare your lawn for winter. START EARLIERSpring Lawn Treatment£59.99For the strongest summer results, wake your lawn up properly in March. Kills winter moss, eliminates spring weeds, and feeds the grass before the heat arrives. BEST VALUEYear Round Bundle£199.99 £239.96All four seasonal treatments delivered when you need them. Spring, summer, autumn, winter. Sorted. Save £40.Apply before the heat does the damage.
Summer treatment works best when applied June to August, before the worst of the heat sets in. Every week you wait, the lawn loses more colour, the weeds get a stronger foothold, and moss creeps further across the shaded patches. Apply now and your lawn enters the hottest months in the strongest condition. Already late August? You'll want our Autumn Treatment for when the growing season winds down.
Learn More
Summer Lawn Care UK: The Complete Guide Lawn Care Calendar 2026: What to Do This Month Best Weed Killer for Lawns UK (2026 Guide) How to Kill Moss, Mould & Algae How Long to Wait Before Reseeding After Weed KillerKey Specs
Everything you need to know.
Every week you wait, the heat does more damage.
One bag. One application. Moss dead in hours. Weeds gone in weeks. Lawn fed, protected, and green right through to autumn. From just £29.99.
Choose Your SizeReviews
Summer Lawn Treatment
| 5 star | 80% | |
| 4 star | 20% | |
| 3 star | 0% | |
| 2 star | 0% | |
| 1 star | 0% |
The product works well and the lawn is looking great going into autumn. My only advice is to follow the application rate carefully and water it in properly especially in summer. I did everything right and got excellent results. A friend applied too heavily without watering and had some scorching. User error not product fault.
We had water restrictions in our area over summer and I was worried the lawn would suffer. Applied Good Grow before the restrictions kicked in and watered it in well. The lawn stayed green and healthy throughout the dry spell while untreated lawns on our street went completely brown. The summer formula seems to help the grass cope with drought.
We host a lot of garden parties in summer and the lawn always lets us down by August. This year I applied Good Grow in June and the lawn looked brilliant right through to September. Thick green and weed free. Several guests asked what we had done differently. Will definitely be buying again next year.
Six weeks of the kids on the lawn every single day plus a paddling pool plus football. The lawn took a hammering but it held up remarkably well. The treatment clearly strengthened the grass because previous summers it would have been mud by week three. Still green and thick at the end of August.
My lawn was full of clover and creeping buttercup by June. Applied Good Grow Summer Treatment and within three weeks the weeds were dying off and the grass was thickening up. By August the lawn was weed free and looking the best it has all year. The summer formula clearly works differently to the spring one.
The moss killing was fast as described but the weed killing and greening took longer than I expected in summer. About four weeks before the lawn really looked noticeably better. Think the hot dry weather slowed things down. End result is good but you need patience in summer.
Every summer our lawn turns brown and crispy while the neighbours water theirs constantly. Applied Good Grow Summer Treatment in early June and even during the July heatwave our lawn stayed green. Not bright green obviously but a healthy dark green while every other lawn on the street was straw coloured. Really impressed with the heat protection.
We have a damp shaded corner that always has moss even in summer. This treatment killed it off within days. The grass is now growing where the moss used to be. The rest of the lawn responded well too with a noticeable green up and the dandelions have gone. Happy with the results.
Was nervous about applying granules in June with no rain forecast but followed the advice and watered it in thoroughly with a sprinkler. Worked perfectly. The moss in the shaded corner went black overnight and the lawn greened up within ten days. Just make sure you water it in properly if rain is not expected.
I like that you just scatter it by hand. Took about fifteen minutes to do the whole lawn. No messing about with spreaders or calibration. Watered it in and left it to do its thing. Two weeks later the lawn is greener the weeds are dying and the moss patch by the fence is gone. Simple effective product.
FAQ
Frequently Asked Questions
How fast is delivery?
We dispatch all orders within 1-2 working days. Most orders arrive within 3-5 days. Free UK delivery on all orders.
When should I apply summer lawn treatment?
June to August is ideal. Apply when grass is actively growing and avoid applying during extreme heatwaves unless you can water thoroughly.
Will it scorch my lawn in hot weather?
No, when used correctly. Water in well after application and avoid applying in temperatures above 25°C unless you can irrigate. Early morning or evening application is best in summer.
Can I apply during a hosepipe ban?
Yes—just wait for rain in the forecast and apply beforehand. The rain will water it in naturally.
Will this help my lawn survive drought?
It helps your lawn stay healthier and more resilient, but it is not a substitute for water. A well-fed lawn recovers faster from drought stress than a starved one.
Can I apply if we are having a heatwave?
Wait until temperatures drop below 25°C or apply in the evening and water in thoroughly. Applying in extreme heat without water can stress your lawn.
Is it safe with heavy foot traffic?
Once watered in and dry, absolutely. The treatment actually helps your lawn handle foot traffic better by strengthening the grass.
Do I need special equipment?
No. Just shake the granules from the bag by hand. No spreader needed.
How much do I need?
Apply at roughly 35g per m². Each bag states its coverage. We recommend getting slightly more than you think for any stubborn patches.
Is it safe for pets and children?
Yes, once watered in and the lawn is dry. Keep children and pets off the treated area until then—usually a few hours after rain or watering.
How long until I see results?
Moss blackens within hours. Grass colour improves within 1-2 weeks. Weeds die within 2-4 weeks.
Do you offer a guarantee?
Yes. If you are not satisfied after following the instructions, contact us within 60 days and we will make it right or give you a full refund.
Scared of scorching your lawn?
Our summer formula is designed for hot weather. Just water it in properly and your lawn will thank you. Apply in the evening, let the sprinkler run, and wake up to a lawn that is fed, protected, and weed-free. And if it does not work? Full refund, no questions asked.
💬 Questions? Email us at [email protected]