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2.5kg of Pro-Kleen Iron Sulphate, Moss Killing & Turf Hardening

From £12.98 inc VAT
From £10.82 exc VAT

2.5kg of Pro-Kleen Iron Sulphate, Moss Killing & Turf Hardening

644 reviews
From £12.98 inc VAT
From £10.82 exc VAT

Order within 9 hrs 51 mins for delivery tomorrow

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  • Make your neighbours envious with a healthy, lush green lawn all year round
  • Hardens turf, prevents lawn disease for healthy, green grass
  • Easy to use and apply with clear usage instructions on the back of the tub
  • Extremely powerful formula used by greenkeepers, lawnkeepers and more
  • Encourages growth of healthy, dark green grass whilst suppressing worm casts
See more product details
  • In stock
  • 30 day money-back guarantee
  • Product Code: 232861
  • Have a question? Call 0800 091 3171

Product information

Brand: Pro-Kleen

Pro-Kleen’s Iron Sulphate formula is a long-lasting and super-effective lawn feed. It leaves your grass looking rich and green while ensuring its blades are thick and soft. This makes your lawn look better and fuller while also helping it fight off diseases and pests!

Pro-Kleen’s unique formula is the professional’s iron sulphate of choice. It’s favoured by groundskeepers, gardeners, and park keepers across the country as it greens and strengthens grass and hardens turf. If you’re not a professional, you’ll simply find that it gives your lawn that vibrant green colour you’ve been aiming for!

Your lawn is constantly in competition with weeds, moss, and pests, not to mention the many lawn diseases that can prey on weak grass. The stronger your lawn is, the more chance it has of fighting off these problems without becoming yellowed and bare. Pro-Kleen Iron Sulphate gives your grass everything it needs to grow strong and healthy, meaning it can fight off drought and pests in the summer and frost in the winter. What this all means is that a regular dose of iron sulphate will help your lawn stay lush and green all year round, making your garden a much nicer place to be!

This 3-in-1 formula greens grass, hardens turf, and kills moss, leaving your lawn feeling like a rich, green carpet! In addition, it also makes your soil slightly more acidic than usual, which deters pests like chafer grubs and leatherjackets.

This great-value 2.5kg tub is easy to re-seal, keeping your iron sulphate fresh for longer. You can get even more for your money by taking advantage of our multi-buy savings, which can save you up to £27!

How to Use Pro-Kleen Iron Sulphate

To use your Iron Sulphate, simply mix it with water and apply it to your lawn using a pump sprayer or watering can. For best results, apply when rain is forecast so it can be thoroughly watered down into the soil. The strength of your solution should vary depending on the results you’re aiming for.

Grass Greening

Mix 1-2g of Iron Sulphate per 1L of water. 1L of the solution will cover 1m² of grass.

Turf Hardening

Mix 2-3g of Iron Sulphate per 1L of water. 1L of the solution will cover 1m² of grass.

Moss Killing

Mix 5g of Iron Sulphate per 1L of water. 1L of the solution will cover 1m² of grass.


Rating 4.6 out of 5 based on 644 reviews.
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Mr john lapworth
there's nothing better than this stuff to get rid of moss and liven up your lawn
26 Mar 2019
ashley clements
excellent product
12 Mar 2019
Have used this before so was ad expected. Smooth purchase and delivery
12 Mar 2019
a brilliant product and already can see results just after using it a week
13 Feb 2019
Geoff Warriner
Sorry cannot report on product at this stage as I have purchased it for the spring. But the supplier is Ok!
31 Jan 2019
Graham Peters
This product is excellent for the treatment of moss on your lawns & is a good tonic for greener grass.
22 Jan 2019
Geoffrey Hicks
Great product delivered as promised
23 Oct 2018
Keith griffin
Worked a treat,I would use again.Oh I did .
17 Oct 2018
Christine Spencer
Great service highly recomend.
18 Sep 2018
Bought to kill moss. It has done the job.. Started with a light dose and increased for more stubborn stuff. Almost moss free now. still got plenty left to finish the job. *****
29 Aug 2018
Amazon Customers
616 Amazon customers reviewed this product

Frequently asked questions

Yes, it is safe to use near pets. However, we would advise you to keep them away from the grass for 12 - 24 hours after application. 
How often should I feed my lawn of 40 sq metres?
We would advise to treat in Autumn, Winter and Spring with two applications, one to two weeks apart.
Can I apply in. November / December to kill moss and fungus growth? Please give concentration required. Many thanks Roger
Yes, this can be used in Autumn, Winter and Spring. The concentration would depend on what you are using the Iron Sulphate for. Please see product details for application on grass greening, turf hardening or removing moss.
Does it get rid of wormcast
As this product encourages healthy grass growth, it will help to surpress worm casts.
Will treatment with iron sulphate deter moles, ie by cutting out the number of worms in your lawn
We are not aware of this product detering moles, but it will surpress worm casts.
Can this product be used on artificial grass to kill the weeds at the edges?
This product will not kill weeds, and we would not advise you to use on artificial grass.
How long after applying Iron Sulphate before reseeding bare patches?
Once the moss has blackened and been raked away from the lawn, we would advise you to leave one to two weeks before reseeding.
Will this harm fish if used near ponds when mixed to the moss killing dilution
Although the product is not classified as environmentally hazardous, this does not exclude the possibility that large or frequent spills can have a harmful or damaging effect, so we would advise to avoid contact with the pond.

Please advise on usage of Iron Sulphate with regard to dog and cat welfare - thanks
After application to your grass do not allow your pets or children onto the treated area for 12-24 hours.
I have a verylarge area to treat with a lot of moss.i will be using a 15l knapsack sprayer.what dosage should I use?
We would suggest 60 - 75g product with 15l of water per 15 square metres.
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