What Causes Mushrooms To Grow In Your Yard? (Solved & Explained!)

 It can be super irritating if fungi begin to grow in your lawn, but it’s really common. But don’t worry, in this article, we will look at various reasons why mushrooms are growing in your yard, so you can alter the environment and prevent them from growing, should you wish. 

The mushrooms in your lawn are unlikely to be dangerous at all, but for your peace of mind, it might be best to remove them if you are not sure what they are. This is especially the case if you have children or pets that might try to play with or eat the mushrooms.

Mushrooms thrive in damp spaces where there is lots of decaying plant waste, like dead leaves, a decaying tree, grass cuttings, or even animal waste for them to feed off of. Unfortunately, having a new turf laid down might also be why mushrooms grow in your yard since the mushroom spores have been disturbed.

Though there are many reasons why mushrooms might grow in your lawn, it is important not to worry too much. Mushrooms will often disappear on their own as the conditions of the lawn change and the climate getting warmer or cooler. Mushrooms growing in your lawn is actually a sign that your grass and soil are healthy – so try to take the mushrooms growing in your garden as a compliment if you can!

Now, though, let’s address some of the reasons why mushrooms are cropping up in your yard.

Why Mushrooms Are Growing In Your Yard

New Turf

As I mentioned above, putting new turf down might be the reason why mushrooms are suddenly growing in your lawn. If you have not had fungi growing in your yard recently, and then growing in your new turf, this is most likely the reason for them. Removing old grass and putting fresh turf down exposes lots of mushroom spores in your soil, which have been dormant, but now are able to grow. 

We understand that this might be pretty annoying, as it might ruin the look of your new turf a little. You can hope that the mushroom spores will return to their dormant state relatively quickly, and once you can mow your new turf (with your grass box on), cutting over the mushrooms should stop them from coming back quickly.

Too Much Shade

In the wild, mushrooms are found in shady, moist parts of the woods. You might not be able to help your lawn is a little dark if you have high fences or trees preventing direct sunlight from getting to your lawn, but this is another reason why mushrooms could be growing. 

Make sure that there is not too much water in one area of your lawn and that your grass is not too long, as this could create the extra moisture and shade that mushroom spores need to grow.

Decaying Plant Waste

The most common time to see fungi sprouting in your lawn is in the fall, and this is because mushrooms love decaying, dying matter; it is food for them. The dead fallen leaves after the summer provide excellent conditions for mushrooms to grow.

So, regardless of the season, decaying natural matter could be the reason for mushrooms growing in your lawn. Do you have a compost pile that could be feeding some fungi? Perhaps you’ve left your lawn clippings in a pile? This could be cause for mushrooms to grow.

In the wild, mushrooms love to grow around decaying, fallen trees. If you have a tree stump in your garden, there is a significant likelihood that mushrooms will grow around it, as this provides a lot of nutrients in the soil that they love.

If you have pets, any animal waste in the garden could also trigger mushrooms to grow in your lawn. Be sure to pick up quickly after your dogs, for example, to prevent this from occurring.

Are The Mushrooms In My Lawn Poisonous?

It is improbable that the mushrooms in your lawn are poisonous. Depending on where you live, they are probably what is known as a House Mushroom or Urban Mushroom, which cannot cause you any harm. 

However, always be cautious around mushrooms growing in your lawn. There are many types of poisonous mushrooms that look similar to the harmless varieties, and you should never eat unidentified mushrooms like those growing on your property.

You can either leave the mushrooms alone to naturally leave your garden, or you can take action to remove the mushrooms from your lawn. Let’s have a look at how you might go about doing this.

How To Get Rid Of Lawn Mushrooms

If you want to immediately destroy the mushrooms in your yard, you can mow over them. However, many gardeners do not recommend this as it leaves the root of the mushrooms in your lawn, meaning they are likely to grow back. Instead, you can dig the mushrooms out of your lawn from their source so that they are not able to grow back.

You can pull out mushrooms by hand or use a trowel or knife to cut mushrooms out of your lawn. If you have lots, you might have to mow your lawn to remove them.

It is best to remove the mushrooms in your lawn while there are not too many, as their spores have not had much time to spread. When you dig the mushrooms out, you should store them in a plastic bag and throw them away somewhere where the spores cannot escape, and return them to your lawn. Definitely do not put your mushrooms in the compost, as the spores will just return to your garden.

If you can, try not to tread on the areas where fungi have been growing and then continue to walk around your lawn. If you do this, you could be spreading the mushroom’s spores with your shoes, meaning that your efforts to remove the mushrooms have been futile.