Deeper Colour in Days
Made for All UK Lawns
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Northern Ireland / England / Wales / Scotland*
*We are currently unable to deliver to the Scottish highlands.
We currently don’t deliver to the Channel Islands, Isle of Wight, Isle of Man or to the Republic of Ireland.
Delivery costs are added at checkout.
Delivery times are estimates and may take longer during busy times, holidays or when there are adverse weather conditions or courier delays. Please ensure that you order in good time.
Help your lawn maintain vibrant growth and that deep green colour all summer that our iGrow Carpet fertiliser is famous for.
iGrow Carpet Summer Advance controlled-release fertiliser helps you grow a rich, green, thick lawn with ease. It releases nutrients gradually, providing steady and controlled results for up to 3 months. Your lawn gets just the right amount of nourishment over time. With iGrow Carpet, lawn care is simple, so you can enjoy a healthy lawn with less effort!
Our Summer Advance lawn feed gives your lawn a proper boost throughout the summer, turning it into a lush, dark-green carpet.
Nitrogen (18% N) creates lush green growth as the days longer. This powers photosynthesis for strong and vibrant lawn.
Phosphorus (0% P) – moves very slowly through soil and isn’t needed by grass in summer, so our formula focuses solely on the nutrients your lawn actually uses.
Potassium (12% K) – helps your lawn lock in moisture during dry spells and recover quickly from drought stress, keeping its colour vibrant for longer.
Magnesium (2% MgO) is central to chlorophyll production, this helps your lawn achieve a darker richer shade of green. (Without any staining that comes with cheaper economy iron based products).
Use our Measure Your Lawn Tool — to calculate how many bags you need in total.
The application rate is 25–35 grams per m².
30 grams per m² is the recommended average — it gives a great balance of colour, growth, and coverage, while allowing for a bit of wastage or overlap around edges.
We currently offer 2.5kg and 8kg bags. Use the chart below to estimate how much fertiliser you’ll need based on your lawn size and how heavily you plan to apply it.
| Lawn Size | 25g/m² | 30g/m² | 35g/m² |
|---|---|---|---|
| 50m² | 1.25kg | 1.5kg | 1.75kg |
| 100m² | 2.5kg | 3kg | 3.5kg |
| 150m² | 3.75kg | 4.5kg | 5.25kg |
| 200m² | 5kg | 6kg | 7kg |
| 250m² | 6.25kg | 7.5kg | 8.75kg |
| 300m² | 7.5kg | 9kg | 10.5kg |
| 350m² | 8.75kg | 10.5kg | 12.25kg |
| 400m² | 10kg | 12kg | 14kg |
| 450m² | 11.25kg | 13.5kg | 15.75kg |
| 500m² | 12.5kg | 15kg | 17.5kg |
iGrow Carpet Summer Advance 18-0-18 + 2% MgO is a controlled slow-release fertiliser that gives your lawn a rich, vibrant green for 8–10 weeks.
If there has been a prolonged dry spell its coating can stretch that to up to 12 weeks. We recommend treating your lawn every 10 weeks to keep your lawn looking its best.
• Late May, June, July and August
• Use a spreader for even coverage.
• Do not apply by hand.
• We recommend watering the lawn within 48 hours of application. (The sooner it is watered in, the sooner you will see the results).
• Do not apply in a frost
• Keep pets and the kids off the lawn during application and for a few hours afterwards.
• Brush or blow excess fertiliser off driveways, patios, and paths.
Made for All UK Lawns
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Quick delivery and good quality products.
Extremely happy with my seaweed lawn booster and autumn fertiliser. Managed to get it down just in time to see effects before the winter weather gets too bad.
Great product - thoroughly recommend
Great product and purchased to give my newly renovated lawn the best chance of a great start into 2025z Easy to understand and apply. Great business and products - have used alongside the seaweed
Used the seaweed regularly since new lawn laid in May. Very pleased with the results.
