Green Machine – Liquid Iron Sulphate 1L

£19.99 inc. Vat

  • Liquid Iron Sulphate with Nitrogen
  • Rapidly greens grass & turns moss black
  • Use all year (even in winter)
  • Apply using sprayer or watering can
  • 1L Green Machine covers 330m²
A fast and easy way to green up your lawn – This liquid iron will turn your lawn dark green and includes added manganese and nitrogen to help your lawn look its best.

1L covers up to 330m², simply add the required amount to your watering can or sprayer and fill with water!

How to use
Mix 300ml product with 3-4 litres of water to cover 100m²
Spray evenly on grass and leave to be absorbed by the leaf
No need to water this product in
Treatment can be repeated every 4 weeks

For outstanding results use in conjunction with:
-> Dark Green Lawn in (spring / summer)
-> Dark Green Autumn in (Autumn)

In stock

iron sulphate for lawns
Green Machine - Liquid Iron Sulphate 1L £19.99 inc. Vat
  • Free Delivery Tuesday, 7th February
  • Saturday Delivery available at checkout
  • Over 25,000 UK customers

Customer Reviews

Based on 26 reviews
Nigel B.
Fantastic products and service

I have recently re done my lawn using all of the products from Garden Lawncare Guy.
Following Matt's brilliant YouTube videos and advise I ordered my products sowing fertiliser, seed, and wetting agent , having never done lawn renovation before I was a bit apprehensive as to how it would turn out. I needn't have worried , brilliant products and exceptional service. After third cut of new grass applied Liquid Iron and also the seaweed, wow, cannot Express how pleased I am with the results, I now have a lawn to be proud of, a little effort and superb advise and products. Many thanks Matt.

Priyesh M.
Great product

Amazing products with exceptional performance! I bought the dark grass feed and fertiliser bundle and within two weeks my grass was thick and green! Will be buying again

Steve N.
Good stuff

Good stuff and good price

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Liquid Iron Sulphate for Lawns

Green Machine is a fast-acting liquid iron product to rapidly green up any lawn.

Greens Grass Fast

It’s packed with Iron Sulphate, Nitrogen and Manganese that will green up your grass and lawn in a matter of days.

This fast acting liquid iron product starts working instantly as it’s absorbed by the plant leaves.

iron sulphate for lawns
iron sulphate for grass

Liquid Iron Sulphate

1L covers 330m²

Simply add the green machine liquid iron to your knapsack, fill with water, and start spraying!

It’s that simple – no dissolving required.

Benefits of Iron Sulphate

Apply in spring / summer to feed your grass and quickly green up the lawn.

Applied in autumn / winter this product will help harden the turf and provide lush colour – even in cold temperatures

Grass that grows in cold weather

Garden Lawncare Guy Fertiliser

Made in the UK

Produced in the UK and tried and tested for UK lawns.

Expert Advice

Free expert advice for you to improve your lawn.


Works on Any Lawn

Professional grade fertiliser that works on any lawn.

Fast & Free Delivery

Free next working day delivery to most UK postcodes

How to apply Liquid Iron Sulphate

  1. If applicable rake or scarify to remove moss / debris
  2. Diluate the required product with water
  3. Apply using a sprayer or watering can
  4. Do not water in, leave to dry on the leaf

Works well with Spring/Summer, Autumn or Winter fertiliser

Apply 2-4 weeks before using grass seed
Contains Ferrous Sulphate – which can irritate skin and eyes

Ultimate Winter Bundle

Save 10% and try the Winter Lawn Bundle

  • Winter Lawn Feed
  • Liquid Seaweed
  • Green Machine Liquid Iron

Additional information

Weight1 kg
Use in

Spring, Summer, Autumn, Winter