Got questions about feeding your lawn? You're in the right place. We've answered the most common questions from DIY lawn enthusiasts like you. Can't find what you need? Email us at info@igrowcarpet.co.uk, message us on WhatsApp, or join our Facebook community of 10,000+ lawn lovers.
Got questions about feeding your lawn? You're in the right place. We've answered the most common questions from DIY lawn enthusiasts like you. Can't find what you need? Email us at info@igrowcarpet.co.uk, message us on WhatsApp, or join our Facebook community of 10,000+ lawn lovers.
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New to lawn care? Start here. These questions cover the basics, from choosing your first product to understanding if our feeds will work on your lawn type.
Great question! Start with whichever seasonal feed matches the current time of year: Spring Starter Plus for spring, Summer Advance for summer, or Autumn Lawn Builder for autumn (which also doubles as your winter feed at a reduced rate).
Your quick start guide:
Don't worry, it's much easier than you think!
You can start at any time of year. Just choose the feed that matches the current season. There's no "wrong" time to begin looking after your lawn.
Use our Lawn Measurement Tool. It calculates exactly how much you need based on your lawn size.
Yes! All our products work on every lawn type: clay, sandy, loamy, or anything in between.
You might see companies claiming their fertiliser is "specially formulated for clay soil" or "designed for sandy lawns," but that's mostly marketing. The truth is, a good quality slow-release feed works brilliantly on all soil types.
The real secret is using the right amount at the right time, and we've got that sorted for you.
No. Our products are fertilisers, not weedkillers, and we're upfront about that.
What they do is grow thick, strong grass, and dense grass is the best long-term defence against weeds and moss because it doesn't leave them room to get established.
For moss, Green Shot Iron weakens it and makes it much easier to rake out, while giving your grass a deep colour boost at the same time. But the real fix for moss is always the same: sort the conditions it loves (thin grass, shade, compaction) and feed the grass so it wins the fight.
Yes. That's exactly what our Pre-Seeder (6-9-6) is for. The higher phosphorus drives root growth, which is what new grass needs most.
Apply it a week before seeding or on the day itself, and it works just as well under fresh turf.
It lasts around 5 to 6 weeks, then leave 6 weeks before your first seasonal feed. Don't put a full-strength seasonal feed straight onto new seed. The nitrogen is too much for young grass.
Both, ideally, but they do different jobs.
Granular seasonal feeds are the backbone. One application feeds your lawn for 10 to 12 weeks.
Liquids are the top-ups. Seaweed Lawn Booster goes down monthly, year-round, working on your soil and roots underneath. Liquid iron is for when you want fast, visible colour.
If you're starting out, just get the granular feed for the current season. Add the liquids once you've got the basics down.
Timing is everything. Learn when to feed, what happens if you're early or late, and how to fit lawn care into your busy schedule.
Roughly every 10–12 weeks for consistently healthy grass throughout the growing season.
Our programme is designed to fit around your life. Perfect for busy people who still want a beautiful lawn without the hassle.
If you feed a bit early (before the 10-week mark), your grass might grow faster and you'll need to mow sooner than planned. It won't harm your lawn, but try to leave at least 10 weeks between applications of Spring, Summer, or Autumn feed.
The Pre-Seeder fertiliser is different. It can be applied 1 week before seeding, or at the time of seeding/overseeding. It lasts around 5–6 weeks. We advise waiting 6 weeks before your next treatment.
Life gets busy, we get it! If you're a couple of weeks late, you might notice the grass looking slightly paler or growing more slowly, but don't panic.
As soon as you feed it at the next opportunity, it'll bounce right back.
No, but you ease off. Use Autumn Lawn Builder at a reduced rate of 20g per m² through December, January and February. Winter feeding is about keeping roots strong, not pushing growth.
Seaweed carries on monthly all winter, and iron will hold your colour when everything else has gone dull.
Yes, but follow these simple rules:
Always mow BEFORE feeding, never after. If you mow afterwards, you'll hoover up the fertiliser you've just put down.
If you have lots of weeds: Don't mow for 3 days before treatment, then wait another 3 days after. This gives the treatment time to work.
In hot weather (25°C or above): Feed early morning or late afternoon/evening during daylight hours. Avoid the hottest part of the day to prevent scorching.
Get the best results with proper application. From choosing a spreader to knowing when to water, these tips ensure your lawn gets the most from every feed.
We always recommend using a fertiliser spreader for the best, most even coverage. Our beginners guide to fertilising your lawn covers everything from choosing a spreader to spreader settings, whether that's a handheld spreader for smaller lawns or a push spreader for larger areas.
We recommend 25–35g per square metre. Our Lawn Measurement Tool automatically calculates for 30g per m², which gives you a safety margin.
Important: Going slightly outside this range usually won't harm your lawn (provided you water it in properly), but it will waste product. Over-applying can scorch grass, so stick close to the recommended rate.
We can't accept liability for damage caused by excessive application.
Use our free Lawn Measurement Tool to get the exact amount you need. It's accurate, saves you money, and means you'll never run out halfway through!
In light rain or on damp grass: Yes! Damp conditions are actually fine. They help the fertiliser absorb better, as long as you can keep the product dry in your spreader.
Avoid if:
Yes, watering helps prevent scorch and speeds up results.
For best results, water your lawn on the same day or within 48 hours of application. The sooner you water it in, the faster you'll see results. We recommend using a sprinkler for even coverage.
Relying on rain? You'll need a decent amount, at least 4–5mm of rain to properly dissolve the granules and wash them into the soil. A light drizzle won't be enough.
Usually 7–10 days, though some products work faster than others.
You'll notice your grass becoming greener and more vibrant as the nutrients kick in.
Yes, but it's best to water it in first.
We also recommend keeping kids and pets off the lawn while you're applying the treatment and until it's fully dry. After that, it's completely safe for everyone to enjoy the garden again.
Here's everything you need to know about using our products safely around children, pets, and garden wildlife.
Yes, our products are child and pet-friendly when used as directed.
Keep kids and pets off the lawn during application and until the treatment has been watered in and the lawn is fully dry. Once dry, it's completely safe for them to play on the grass.
Dogs and cats are generally low risk once the fertiliser has been watered in and the lawn is dry. The main concern is contact with undissolved granules, which is why watering in matters.
If your dog or cat walks on the lawn before it's been watered, give their paws a quick rinse to avoid tracking anything indoors.
These need a bit more caution because they eat grass. We recommend keeping rabbits and guinea pigs off treated areas for at least 7 days after application, even after watering in.
If your rabbit or guinea pig has a regular grazing area, you might want to either:
Don't apply fertiliser to areas where poultry graze. They'll mistake the granules for seed or grit and eat them. If you keep poultry, either fence off your treated lawn or don't treat the areas they have access to.
When used as directed and watered in properly, our products are safe around garden wildlife.
Birds may peck at granules initially (they look like seeds), so watering in promptly helps prevent this.
Want more detail? Read our complete Child & Pet Safety Guide for step-by-step advice and specific timings for different animals.
Dealing with staining, scarifying, or liquid products? These advanced tips help you handle special situations like a pro.
Our Spring, Summer, Autumn, Winter, and Pre-Seeder feeds are iron-free and don't stain. However, it's always good practice to brush or blow any stray granules off hard surfaces like driveways, patios, and paths.
Our iron-based products WILL stain hard surfaces, so keep them well away from paving, concrete, and decking.
Yes, but follow the same rules as mowing: if your lawn has lots of weeds, leave 3 days either side of treatment to prevent scorching.
If there aren't many weeds, you're fine to scarify or aerate without waiting.
Planning a big lawn project? Do your scarifying or aerating first, then feed afterwards. Your lawn will recover faster with fresh nutrients available right away.
No, you don't need to water in soluble iron after spraying. Once applied and the leaves have dried, you're done. In fact, letting it sit on the grass blades helps it work better.
You can apply liquid iron when the lawn is damp or even wet. Many people spray it in the rain or on wet grass.
No, don't water it in. For best results, spray liquid seaweed and let it dry on the leaves. This allows the grass to absorb the nutrients directly through the blades.
Don't worry if it rains after application. Some will wash off the leaves but it'll soak into the soil and feed the roots instead. The nutrients won't go to waste; your lawn benefits either way.
If a child or pet does ingest fertiliser, contact your GP, NHS 111, or vet immediately. Having the product packaging to hand will help them give you the right advice.
Most cases of accidental contact result in nothing more than mild stomach upset, but it's always best to seek professional advice.
Questions about delivery, returns, or which product to choose? We've got you covered with all the practical stuff.
Fast delivery, usually within 5 working days, and often quicker for weekday orders.
Delivery times are estimates and may take longer during busy times, holidays, or when there are adverse weather conditions or courier delays. Please ensure you order in good time.
We deliver throughout the UK, including England, Scotland, Wales, and Northern Ireland.
We do not deliver to:
Delivery costs are £7 and are added at checkout.
You can cancel your order within 14 days of ordering.
If your order hasn't been dispatched yet, we'll process a full refund including the delivery cost.
If your order has been dispatched, you can still return it in unused and resellable condition. After we receive and inspect the items, we'll issue a refund for the product cost, minus return shipping costs.
For full details, see our Deliveries and Returns page.
Absolutely! Email us at info@igrowcarpet.co.uk or message us on WhatsApp with details about your lawn and what you're trying to achieve. We're always happy to help you choose the right product.
Better yet, join our Facebook community of over 10,000 lawn enthusiasts. They love sharing tips, tricks, and advice!
Keep all fertiliser products stored safely out of reach of children and pets. A locked shed or high shelf in the garage works well. Always keep products in their original packaging so you've got the instructions and safety information to hand.
Join our friendly Facebook community with over 10,000 members who love talking about their lawns and sharing tips.
Can't find what you need? Email us at info@igrowcarpet.co.uk or drop us a message on WhatsApp and we'll get back to you as soon as we can.