2.5kg Autumn Lawn Builder + 1L Seaweed Lawn Booster 8%
The pair for autumn. Autumn Lawn Builder thickens the grass, repairs summer wear and sets the roots up for winter. Seaweed feeds the soil so the lawn gets more from it.
Save 10% compared to buying both on their own.
How To Apply Our Fertiliser
Want to get the best results? Our free Beginners Guide to Fertilising Your Lawn covers everything from spreader settings to professional application techniques.
Standard application:
After stress such as drought:
Q: When should I apply it?
September and October as growth starts to slow.
Q: How much do I need?
Our fertiliser can be applied at 25 to 35 grams per m². We recommend 30 grams per m² as the ideal rate as it gives great results while allowing for a little overlap around edges. Use our lawn measurement tool on the website to calculate exactly how many bags you need based on your lawn size.
Q: How quickly will I see results?
4 to 7 days after it's been watered in.
Q: What's the best way to water it in?
We recommend using a sprinkler as depending on your water pressure, a 15 to 20 minute soak is enough to get the product working. If rainfall is forecast within the next 48 hours that will also do the job, as long as it's not just a light shower.
Q: Will it stain my patio or driveway?
It shouldn't as our granular products are iron free. That said, it's always best to brush or blow any product off hard surfaces before watering in, just to be safe.
Q: How long does it last?
10 weeks in normal conditions. If there's been little rain and slow growth it can stretch to 12 weeks.
Q: Can I use it in winter?
Yes, at a reduced rate of 20g/m² through December to February.
Q: Do I need a spreader?
Yes as a spreader gives you even coverage and prevents patchy results. Hand spreading isn't recommended.
Q: What spreader setting should I use?
This varies by spreader model and walking speed. We have a quick start guide on the learning hub.
Q: Can I apply it in the rain?
Light rain after applying is fine and will help water it in. Avoid applying just before very heavy rain as it can wash the product off the lawn before it has a chance to work.
Q: What if I accidentally over-apply?
Water the area thoroughly straight away to dilute the product and reduce the risk of any scorch.
Q: Is it safe for kids and pets?
Yes, once watered in and dry. Grazing pets like rabbits and guinea pigs should be kept off for two weeks or three cuts, whichever comes first.
Q: How much do I need?
A 1 litre bottle treats 250 to 500m² depending on the application rate. For regular maintenance and healthy lawns, the lower rate covers up to 500m². For stressed, patchy or nutrient deficient lawns the higher rate covers 250m². Use the higher rate if your lawn is recovering from drought, heavy use or poor soil conditions.
Q: How often should I apply it?
Once a month year round alongside your granular fertiliser programme.
Q: How do I apply it?
Dilute and apply with a garden sprayer or watering can.
Q: Will I see an instant result like the iron?
Not in the same way as seaweed works beneath the surface improving soil health and root strength, so the results build over time and make everything else you apply work better.
Q: Is it safe for kids and pets?
Yes, it's a natural product and safe once applied.
Not used the autumn lawn builder yet, the seaweed & iron are brilliant!
Just one question, can the seaweed & iron shot be applied together at the same time please? Thank you.
Great questions! Yes the seaweed & iron can be applied together at the same time. Thanks for your question and for choosing iGrow Carpet!
The blistering summer literally baked our front lawn and a new patio in the back meant that we needed to relevel the back lawn. Suffice to say, we needed to seed a new lawn and seriously renovate our back lawns, This is a vital part of the solution along with proper prep, good seed and seaweed. 2 weeks on and we have lush green carpets ready for the winter and some tinkering in the spring. Thoroughly recommended, Will definitely buy again.
The seeding Success Duo is brilliant. It was very easy to you & gave amazing coverage. Very good product.
My garden took a severe beating due to the lack of rain and very warm and sunny weather which lasted for weeks. With a gap in the weather appearing I ordered the Autumn Lawn Builder Fertiliser and got it spread before the rainfall came. What a remarkable change. Totally green and fully recovered. I'll be using the seasonal recommendations from now on.
Yes I have been using Seaweed Lawn Booster now for several months and Im starting to see the results.
Brilliant product