why is my lawn covered in worm casts

When you're striving to achieve a perfect, mess-free lawn, the last thing you want to see are worm casts popping up all over the place. Today we take a closer look at what worm casts are, where they come from and how you can get rid of them. 

What are worm casts?

Worm casts are a sign of earthworm activity, they're little heaps of soil that get ejected onto the surface of your lawn out of the worm's digestive tract. While worm casts might seem like an unwelcome addition to your lawn, they're actually perfectly normal and can indicate that your lawn is nice and healthy. Earthworms are beneficial for your soil and also provide a tasty snack for garden birds. 

Why is my lawn suddenly covered in worm casts?

If you've noticed a sudden influx in the number of worm casts on your lawn, it's probably due to a change in weather. Earthworms thrive in damp weather which is why your lawn might be covered in worm casts during autumn and damp winter months. It's common for you to notice more worm casts covering your lawn in the mornings as worms are most active at night. The ground at night is cooler, damper and the worms can feed on the surface without worrying about predation from birds and other animals.

Positives of worm casts in your lawn

While you might consider the worms in your lawn to be pests, they're actually quite good for your soil (as long as there aren't too many of them!) As earthworms munch their way through your soil they loosen thatch forming in the grass and they help to break down organic material, providing nutrients to the soil.

The movement of earthworms through the soil also aerates the soil, loosens compacted dirt and can help key elements like food, water and air circulate around the roots of your grass.

What if I don't want my lawn to be covered in worm casts?

There are definitely some benefits to having worms in your lawn, but we understand that some gardeners strive fo a really pristine look - which means the worm casts have to go! 

One of the quickest and easiest ways to get rid of worm casts is to use a brush or dense rake to brush the dirt back over the lawn. When you mow the lawn, the worm casts will be pressed down into the soil again. 

Applying topsoil to a lawn that's been damaged by worm casts can help to level out any irregular lumps and bumps. A good layer of topsoil will also help to revive plants that have withered around the worm casts, so don't miss this step in your lawn care routine.

Lawn maintenance is the key to reducing worm casts.

The most efficient way to prevent worm casts from covering your lawn  is to keep your lawn well-maintained all year round with a proper lawn care programme. Think about it, worms favour grass that's compacted and waterlogged. If you keep your lawn in good condition, earthworms are much less likely to infest it!

Here at Lawn and Weed Expert, we can offer you a range of services to keep your lawn in tip-top condition, including a regular maintenance program. From, weed control, to lawn fertilising and scarification, our team can do it. We even provide a range of pest control services to help you keep critters like earthworms, leatherjackets and moles at bay. Learn more about our pest control services below. 

Pest Control Services >

If you've had enough of your lawn being covered in worm casts, and you'd like us to attend your property for a FREE, no-obligation survey, fill in the form below and a member of our team will get back to you.


A healthy green lawn

Lawn feeds contain a number of essential nutrients that keep grass green and healthy. The most important of these are nitrogen (N), phosphorous (P) and potassium (K).


are birds good for your garden

Seeing birds in your garden is a sign that you're doing things right! Birds are important creatures that contribute to a healthy garden & they're attracted to diverse and healthy gardens. The key to a flourishing garden is to make sure that every plant and organism in it is fully supported within the eco-system. When the balance of wildlife in your garden shifts you can end up with infestations amongst other problems. That's why it's important to entice birds into your garden all year round.


Overseeding a lawn

Overseeding your lawn - that is, adding new grass seed every once in a while - is important if you want thick, healthy grass.


what does lawn feed do

The secret to a healthy body, a luscious head of hair and continued good health is in the types of food that we eat. The same principle applies to your lawn! Grass that's malnourished will appear dull and lifeless, that's why it's so important that you think about your lawn feed carefully.

There are lots of different lawn feeds on the market and it might take a bit of trial and error before you find one that seems to tick all the boxes for your lawn. You might find that you're spending a lot of money on lawn feed and not seeing the results you hoped for. 

When applied correctly, lawn feed will help your grass stay healthy, luscious and green all year round!


Choosing the right lawn feed

Unless you have a good understanding of chemistry, you might struggle to differentiate between one type of lawn feed and another. Some lawn feeds are rich in nitrates, others are formulated with moss-killing chemicals and some are more acidic than others.

So, how do you decide which lawn feed is most suitable for your lawn? It's all about finding the right balance of these three elements: nitrogen, phosphorous and potassium.

Read More: Types of Lawn Fertiliser - What's the Right Choice for Your Lawn?


Best time to feed your lawn

Like all living organisms, lawns require regular feeding. Your lawn is exposed to the weather all year round, so you should adjust your feeding regime to suit different seasons. 

Your lawn's requirements in summer when the temperature is hot and the air is dry are going to a be a lot different than your lawn's requirements in autumn/winter when the temperature drops and things become a bit boggy! The best way to remember what to feed your lawn and when is to set up a calendar or reminder (you could even do this on your phone!)

Take a look at our lawn feeding tips for different seasons here: Lawn Feeding Tips - When To Feed Your Lawn


What happens if I use too much lawn feed?

Going back to our original analogy, overindulging in food (particularly the wrong kinds of food) is seriously going to have a knock-on effect for your body. Over-eating has all kinds of nasty side effects like; weight gain, breakouts, diabetes... the list goes on!

Surprise surprise, overfeeding your lawn isn't going to do it any favours. One of the most common side effects of overfeeding is called Lawn Fertiliser Burn. It causes horrible brow, dry patches in your lawn and can be quite difficult to correct. That's why we recommend sticking to a routine and making sure you've chosen lawn feed that does the right things for your lawn.


Get lawn feed that does the right things, first time!

It turns out that understanding what lawn feed does, choosing the right one and using it properly is a fine art. We understand that most homeowners don't have time to research different chemicals, nevermind stick to a gruelling lawn feed regime. 

That's why we offer a professional lawn fertiliser service! Our lawn technicians have been working with high-quality lawn fertiliser that isn't available in shops or garden centres for years. They have a really great understanding of different lawn types and their needs, which makes it easy for us to find a lawn feed that does the right things for you.

Professional Lawn Fertiliser Services >

If you have any questions about lawn fertiliser, or if you'd like to arrange a FREE lawn survey, don't hesitate to get in touch. You can email us at - sales@lawnweedexpert.co.uk.

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