Things to Know Before Buying Moss Killer
Moss is a common problem in gardens for a variety of reasons. It can give the lawn an uneven colour and feel spongy to walk on.
Moss often occurs when there is sparse grass cover, on compacted or waterlogged soil, in shady areas, or on soil that is lacking in nutrients or too acidic.
Moss killers are an easy and effective way to rid your lawn of that ugly moss. The moss will die quickly after treatment and can then be raked or scarified out.
So, if you want to start using moss killer, read these helpful tips to help you make an informed purchase:
The Benefits of Using Moss Killer
If allowed to get out of control, moss can overrun your lawn. It often outcompetes grass and will steal valuable water and nutrients away. As a result, moss will spread, killing off your grass.
A lot of moss on the lawn will look patchy and spongy, it won’t give you the smooth, well-groomed lawn that you’re after.
Using a moss killer will stop this spread, and the majority of them will actually fertilise your lawn and help improve its appearance.
Moss requires a moist environment to thrive; unlike most other plants, it doesn’t have roots to transport water and nutrients. The best way to treat moss is to dry it out completely, and this is how a moss killer works. Most moss killers contain iron, which can dry out the plant over time.
The best moss killer products will also improve the health of your lawn. If you have a lot of moss you may need to repeat the application. Most moss killers contain iron sulphate which kills the moss as well as greening up the lawn. At lower concentrations, these products can be used as a lawn tonic.
What’s Best – Liquid or Granular Form?
Both liquid and granular form moss killers are very effective.
One factor that may affect whether you choose one or the other is the type of spreader you have available.
If you already have a granule fertiliser spreader, you may be more comfortable with granular moss killer. Equally, if you normally use a liquid sprayer when fertilising, or have a watering can with a fine-holed rose, it might suit you better to use liquid moss killer.
Pros of Liquid Moss Killer
- If applied properly, gives very even coverage
- Easily and quickly absorbed
- Easy to apply
Cons of Liquid Moss Killer
- May not last as long in storage as granules
- Shouldn’t be used before rainy weather
Pros of Granular Moss Killer
- Can be ‘slow release’ – lasts longer and may be more effective
- May be cheaper than liquid products
Cons of Granular Moss Killer
- May burn the grass if not carefully and evenly applied
- Can be more difficult to apply evenly
Moss Killer With or Without Lawn Feed?
All of the moss killers featured in these reviews also advertise themselves as lawn feed. Personally, I think it’s best to buy a moss killer combined with lawn feed because when moss dies off it can leave sparse patches. If the lawn is treated at the same time, it won’t take long for the grass to grow and fill in these areas.
However, if your lawn has been really overrun by moss, you might want to consider buying a specified moss killer. This will be the best way to really tackle a carpet of thick moss.
Back To Contents
Moss Killer FAQs
How can I remove moss from any outdoor surface?
Use a high-quality moss killer.
Moss relies on moisture to stay alive, so the best way to eliminate it is to dry it out completely. Many traditional methods such as power washing and bleaching won’t get rid of it for good.
Follow the instructions of your moss killer carefully, and check exactly where your moss killer can be used. If your first application doesn’t successfully eliminate the moss, you may need to treat the area more than once.
Most moss killers will deliver results within anywhere between a few hours and a couple of weeks, depending on the product you use.
What is the best time to apply moss killer?
Ideal times to apply moss killers are in spring or autumn.
If applying in spring, do this as soon as the weather warms and the grass begins to grow, ideally before the likelihood of sporing in April. If you want to apply the treatment in autumn, wait until the dry weather is over and the conditions are wetter, September is usually about right.
When do I need to rake out the moss after applying a moss killer?
Wait until the moss is dead and black before raking, otherwise, you can spread pieces of live moss and spores over to another area of your lawn.
I have applied a moss killer and it hasn’t killed all the moss. How long do I have to wait until reapplying?
It’s best to wait a few weeks before applying a second application of moss killer, especially if it contains iron sulphate as an overdose of this can scorch the grass.
Can I apply moss killer only on the most affected parts of my lawn?
It is best to apply these products over the whole lawn as they increase the acidity of the soil and this can affect the colour of the lawn. Part applications could result in a variable colour in your grass and a patchy and uneven effect.
What can I do to prevent the moss coming back in my lawn?
- Improve drainage and aerate the lawn – if your lawn has a tendency to become waterlogged or compacted this will encourage moss.
- Always feed your lawn in autumn to help prevent moss taking over in the damp winter months. Regular feeding keeps your grass in tip-top condition making it harder for moss to find a way in.
- Avoid cutting your grass too short as this can damage it and allow moss to get a foothold.
Is moss killer with iron sulphate dangerous?
Iron sulphate is safe to use as long as you follow the guidance on the pack carefully. You should, in general, keep pets and children off the area for 24 hours after use. If you want to use moss killer on patios or paths then test it on a small inconspicuous area as the product can stain. Wear gloves and protect the areas where you mix the product to prevent staining and remember to check your shoes before going indoors as the products can stain floors and carpets.
Back To Contents