A guide for Lawn Tiger customers
Weed treatments are part of your annual Lawn Tiger programme and take a few weeks to work, so don't be alarmed if you don't see instant results. We schedule the main treatment for May or June when conditions are best, and we'll always let you know if we need to reschedule. Mowing and watering between our visits makes a real difference to how well things come along. Some weeds are tougher than others and may need more than one season to get on top of, but we'll get there. If you've got a few minutes, the full guide below explains everything in a bit more detail.
A lovely lawn is one of those things that's easy to take for granted when it's looking its best, and really hard to ignore when it isn't. If weeds have been creeping in, you're not alone, and sorting it out is exactly what we're here to help with.
All of our customers benefit from our annual treatment plan, a year-round programme of organic-based fertilisers combined with weed and moss treatments applied at the right times of year. This typically involves five visits across the twelve months, each one carefully timed to work with the seasons and give your lawn the best possible chance to thrive.
That said, how your lawn is looked after between those visits has a real impact on the overall results. Your lawn is growing every day, and the mowing, watering and general care that happens in the weeks between our calls genuinely shapes how good it can look. We'll always be straightforward with you about that, because understanding it helps us get the best from the programme together.
Weed control is one part of that programme, and this guide focuses specifically on that. It's also worth mentioning that it's an optional part of your plan. Some customers are happy to leave the weeds be, and that's absolutely fine. But if you're keen to tackle them, read on for how the treatments work, what to expect and how we manage everything around the seasons and the weather.
Weed control is gradual rather than instant, and that's actually how it should work. Over the weeks following a treatment, you'll start to see weeds twisting, curling and slowly dying back as the roots give way. This steady process is a good sign, as it means the treatment is working through the whole plant rather than just affecting the surface.
Treatments perform best when weeds are actively growing in warm conditions with decent soil moisture. Regular mowing helps too. Cold snaps, dry spells and a stressed lawn can all slow things down, but these are normal parts of the gardening year and nothing to worry about.
The other thing that really helps is a thick, healthy lawn. Strong, well-fed grass naturally crowds out weeds over time, so the feeding, watering and mowing you do between our visits is genuinely working towards that goal.
Late spring to early summer is the sweet spot for weed treatments, when growth is strong and plants are taking up what we apply most effectively. That's why we schedule our main weed treatment between May and June, as it's when we consistently see the best results.
If conditions aren't suitable on the day, we'll always let you know and arrange to come back rather than apply a treatment that won't perform as it should. Getting the timing right matters more than sticking rigidly to a date.
Worth knowing: the seasonal weed top-ups included in our Summer and Autumn visits are applied alongside the feed treatments, which go ahead regardless of conditions. These top-ups won't be rescheduled separately if the weather isn't ideal on the day.
Common weeds like dandelions, daisies, clover and plantain usually respond well to one or two treatments, and many customers see a real improvement quite quickly with these.
Others take a bit more time. Speedwell, yarrow, field woodrush and mind-your-own-business have waxy leaves or stubborn roots that make them more resilient. With these, we work towards steady, visible improvement across several visits, and results do build up over the seasons.
Lesser celandine is a special case, as there isn't currently a lawn-safe product that works on it. The good news is that it's seasonal and naturally dies back on its own by late spring, so it tends to be less of a problem than it first appears.
Avoiding mowing for two days either side of a weed treatment really does make a difference. The product needs enough leaf surface to be absorbed properly, and a fresh cut just before or after a visit can reduce how effectively it works.
Beyond that, mowing little and often through the growing season is one of the best things you can do for your lawn. Once a week during active growth, and not cutting too short, keeps the grass strong and gives weeds less opportunity to establish.
Our technicians are City & Guilds NPTC certified in professional pesticide use, and we're members of the UK Lawn Care Association with BASIS Lawn Assured accreditation, independently audited every year. We're genuinely proud of those standards, and they shape everything we do.
UK regulations set clear rules on which products can be used, how often and how far apart applications need to be. Many selective weed treatments can only be applied once per year per lawn, with at least four to eight weeks between any repeat visits. These rules exist to protect your garden, your family and the wider environment, and we follow them carefully.
If a few weeds appear between our visits, pulling them by hand while they're young is often the quickest and most satisfying solution. Some weed types germinate at different times of year, so a little new growth between treatments is completely normal and not a sign that anything has gone wrong.
Anything more significant will be picked up at your next scheduled visit when conditions are right.
Results typically show within three to four weeks, so it's worth giving it a little time before drawing any conclusions. You should start to see leaves distorting and plants dying back, with the pace depending on the weather, soil moisture and mowing in the weeks following the treatment.
No lawn care programme can promise a permanently weed-free lawn, that's simply the nature of a living garden. But with the right treatments at the right time, and a bit of care in between, real and lasting improvement is absolutely achievable.
Mow regularly through the growing season and avoid cutting too short. Water during prolonged dry spells where you can. Keep up with your feed programme to build a thicker, stronger lawn. The healthier the grass, the less room weeds have to get going, and the better your lawn will look year on year.
Every visit we make is about doing things properly, with your lawn's long-term health and your satisfaction firmly in mind. We're genuinely invested in seeing your lawn look its best, and the more we can work together on it, the better the results will be.
Everything you need to know about lawn weed treatments, from how they work to keeping your family and pets safe.
How long does lawn weed treatment take to work?
Most weed treatments take three to four weeks to show visible results. You'll start to see weeds twisting, curling and dying back as the roots break down. Some tougher weeds may take longer or need more than one treatment across the season.
Why are my weeds not dying after treatment?
There are a few common reasons. If the lawn was mown shortly before or after the treatment, the product may not have had enough leaf surface to absorb properly. Cold or dry weather can also slow things down, as weeds need to be actively growing for the treatment to move through the plant. Give it four weeks before drawing any conclusions.
Will the weed treatment harm my grass?
No. The products we use are selective, meaning they are specifically formulated to target broadleaf weeds without affecting grass. All treatments are applied by fully certified technicians and are safe for normal lawn use once dry.
What is the best time of year to treat lawn weeds?
Late spring to early summer, typically May and June, is the most effective time for weed treatments in the UK. This is when weeds are growing strongly and absorbing treatments most efficiently. Treatments applied in cold or dry conditions are significantly less effective.
What happens if it rains after a weed treatment?
A light shower a couple of hours after treatment is generally fine, as the product will have been absorbed by then. Heavy rain immediately after application can wash the treatment off before it has had a chance to work properly. If rain is forecast shortly after we've treated, we'll take that into account and may adjust our timing or let you know what to expect.
Do I need to water the lawn after a weed treatment?
No, there's no need to water after a weed treatment. It's better to leave it be for a day or two, as watering too soon can dilute the product before it has fully absorbed. Regular watering to keep the lawn healthy during dry spells is great generally, just hold off for a couple of days after a treatment visit.
How many weed treatments do I get a year?
Your Lawn Tiger programme typically includes one main dedicated weed treatment, scheduled between May and June when conditions are best. Seasonal weed top-ups are also included as part of the Summer and Autumn visits alongside your regular feed treatments.
Can you spray my lawn for weeds whenever I ask?
Unfortunately not, and there are two reasons for that. UK regulations restrict how often selective weed treatments can be applied, with many products limited to once per year per lawn and a minimum gap of four to eight weeks between repeat applications. We also won't apply treatments when weather conditions aren't suitable, as it simply won't work and would be a wasted visit.
What can I do about weeds between visits?
For a small number of weeds, pulling them by hand while they're young is often the most effective approach. Regular mowing also helps, as it weakens weeds over time and encourages thicker grass growth that naturally resists new weeds moving in.
What weeds are hardest to get rid of in a lawn?
Some of the most persistent lawn weeds in the UK include speedwell, yarrow, field woodrush and mind-your-own-business. These have waxy leaves or deep root systems that make them more resistant to treatment. They can be brought under control over time with repeated seasonal treatments and consistent mowing, but they do require patience.
Does a healthy lawn really make a difference to weeds?
Absolutely. Thick, well-fed grass is your best natural defence against weeds. Weeds tend to establish where grass is thin or stressed, so keeping on top of feeding, watering and mowing creates conditions where weeds struggle to get a foothold in the first place.
Is lawn weed treatment safe for children?
Yes. Our products are approved for use in domestic gardens and are safe for children once the lawn has dried after treatment. We'd simply suggest keeping little ones off the grass while it's still wet, which is usually just a couple of hours after we've finished.
Is lawn weed treatment safe for dogs?
Yes. Once the treated area has fully dried, which typically takes a couple of hours, it is safe for dogs to use the lawn as normal. We'd recommend keeping pets off the grass while it's still wet after treatment, just as a precaution.
Is lawn weed treatment safe for cats?
Yes, the same applies for cats. Keep them off the lawn until the treatment has dried and there's no need for any further precautions. If you have any specific concerns about a pet with health conditions, it's always worth checking with your vet.
Are the products you use organic or chemical?
Our fertiliser programme is organic-based, but our weed treatments use selective herbicides, which is standard across professional lawn care. These are carefully chosen, UK-approved products applied at the correct rates by certified technicians. We wouldn't use anything we weren't entirely confident about.
Are lawn weed treatments safe for wildlife and bees?
We take this seriously. All products we use are approved under UK regulations and applied strictly in accordance with the manufacturer's guidelines and industry standards. We avoid treating in conditions where spray drift is a risk, and our selective herbicides are targeted at broadleaf weeds rather than being broad-spectrum. If you have a wildflower patch or known bee habitat nearby, please do mention it and we'll take extra care around those areas.
Are your weed treatments safe near a vegetable patch or food garden?
We'll always take care around food-growing areas. Please let your technician know on the day if you have raised beds, a vegetable patch or fruit plants nearby, and we'll make sure to keep well clear. As an extra precaution, it's a good idea to cover any edible plants close to the treatment area before we arrive.
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