If you’re like me, you’re always looking for ways to improve your lawn. You may have heard about using liquid iron sulphate or granular iron sulphate to achieve a healthier lawn, but you’re not sure what it is or how to apply it.
This blog post will provide you with all the information you need to get started. We’ll discuss what iron sulphate is, how to apply it, and the benefits of using it.
What is iron sulphate?
Iron sulphate (or Iron Sulfate) is a substance found in liquid or granular lawn fertilisers that is often used to improve the color and health of grass.
It is is used in lawn fertilisers for enhancement of grass and turf and is also well known for its ability to suppress moss often marketed as a moss-killer
Is iron sulphate a moss killer or fertiliser?
Technically, Iron sulphate is actually known as both a moss killer and lawn fertiliser.
It ‘kills’ or controls moss by drying it out and preventing it from photosynthesizing, while also providing essential nutrients to the grass that can help promote healthy growth.
Products that control the growth plants in the UK are often governed by regulations, so depending on the concentration of the product and it’s intended use you may see differences between how iron sulphate is marketed for control of moss or greening of grass.
How do I apply liquid iron sulphate?
Green Machine Liquid iron sulphate is easy to apply, and can be done so with a watering can, backpack sprayer, or pump sprayer
Iron Sulphate Max Strength is a high strength granular form of iron for those wanting to apply with a lawn spreader
Using a watering can to apply iron sulphate
- Add the recommended product ratio to a watering can with a small amount of water in it
- Mix it well together, than simply add the remaining water
- Apply to the lawn and pour it evenly over the desired area – making sure to avoid any nearby plants and hard surfaces.
TIP : Use a watering can with a fine rose attachment so the liquid is evenly applied across the lawn.
Using sprayer to apply iron sulphate
- Add a small ammount of water to your sprayer
- Mix in the required dose of liquid iron
- Top up with the remaining water and apply evenly
TIP : Avoid windy days or very fine nozzle settings as the spray can drift and stain hard surfaces or into flower beds
When to apply iron sulphate?
For best results apply in damp conditions or when rain is expected
The product can be thoroughly watered in after application and walking across the lawn should be avoided until the product is fully watered in to prevent the transfer of the iron onto hard surfaces which is may stain
Avoid applying liquid iron in hot dry conditions or periods of frost
What time of year should I apply iron sulphate to grass?
Can I use iron sulphate in the winter?
Iron over the winter months is a great way to green up the grass without pushing too much top growth providing there are no frosts about.
Benefits of using iron in the spring
Liquid iron sulphate is also used in the spring time to rapidly green up the lawn after the winter stresses.
It’s a great way to give a dark green colour to your lawn during this period of rapid growth
Iron sulphate is known to help control moss and also provide essential nutrients for healthy growth.
Benefits of using iron in the Autumn
Iron sulphate can also be used in the autumn time to help improve the color of the lawn and prepare it for winter.
The added nutrients can help harden the turf, increase its resistance and reduce disease susceptibility.
How much iron sulphate do I need to apply?
1l of Green machine liquid iron sulphate can cover up to 330m²
For rapid greening of grass apply 300ml per 100m²
To calculate the area of your multiply the length by the width – if you have a complex shape of lawn that isnt a perfect square then using a notepad try to divide it up into smaller sections of area and add them together to get an approximation
Ref reference a 10m x 10m lawn is 100m² and would use 300ml of Green Machine Liquid
Conclusion: Should I use Iron on my Lawn?
Applied at the right time, liquid Iron Sulphate can give you a lush green lawn all year round.
It’s very versatile and can be used all year round avoiding frosts and dry heat.
So if you’re looking for an easy way to improve your lawn, liquid iron sulphate is a great option, especially when used in conjunction with a granular fertiliser product.