What Are The Tiny Mushrooms Growing In My Greenhouse

Have you ever panicked and uttered, “what are the tiny mushrooms growing in my greenhouse?” With the extensive list of mushroom varieties, it’s almost impossible to tell the small mushrooms in your greenhouse immediately. At the same time, correct identification is unnecessary because they won’t harm your plants.

However, it’s best not to consume any mushroom you see as they could be poisonous. It’s typical for a gardener to feel disturbed seeing mushrooms in the ground, mulch, or pots of the greenhouse. But since mushroom cultivation as a food source is possible, there shouldn’t be any surprise to see these fungi growing in your greenhouse amongst the crops. 

What Are The Tiny Mushrooms Growing In My Greenhouse


Identifying What Are The Tiny Mushrooms Growing In My Greenhouse

According to David Fischer, author of Edible Wild Mushrooms of North America: A Field-to-kitchen Guide, many mushrooms can grow indoors, mulch beds, or lawns. Correctly identifying the tiny or small ones growing in your greenhouse would be impossible, so below are the types of mushrooms that you can expect in the greenhouse conditions. 


Common mushrooms that grow indoors

A typical small mushroom that grows indoors is Leucocoprinus birnbaumii. You might also see it in your pots in the greenhouse, thus, giving it the name flowerpot parasol and plant pot dapperling. If you live in a temperate region, you have a higher chance of seeing this mushroom. 


Common mushrooms that grow in mulch beds

The mulch beds are also prone to having Clitocybe nuda, Coprinus atramentarius, Coprinus micaceus, and Lepiota cepaestipes. The smallest ones are the last two, and only the last one can cause short-term gastrointestinal symptoms. You can spot them in the greenhouse when the climate is warm. 


Common mushrooms that grow on lawns

Agaricus campestris and Agaricus placomyces are common mushrooms that grow on lawns or the ground of the greenhouse. While these fungi aren’t tiny as their caps measure 4 to 7 inches wide, it’s not surprising to see them growing in ideal conditions like the previous examples. They are also common in the Rocky Mountains of western North America.


Why Do Mushrooms Grow In The Greenhouse?

There are many potential reasons why you see mushrooms growing in your greenhouse. For starters, you might use potting soil contaminated with fungus and the conditions in your greenhouse is ideal for its growth. This is the common reason you see mushrooms in your pots, especially when the environment is cold, humid, and moist. 

But what about the mushrooms that grow in your raised beds in the greenhouse? It might be because of the organic matter in the bed, contamination with potting soil, airborne movement, or from your clothing. Overwatering can also cause mushroom growth in raised beds because the area becomes moist and humid. 


Are Mushrooms Bad For The Greenhouse?

Mushrooms are fungi, and seeing them in the greenhouse will naturally make anyone worried. However, the good news is that mushrooms are not bad for the greenhouse. They are harmless to your plants and even offer benefits for them. 

For example, they improve the quality of the soil because they help with its nutrient content. Unlike weeds, mushrooms won’t compete for the nutrients in the ground. Instead, they add compost by decomposing the organic matter in the soil. 

You can think of the mushrooms and plants having a symbiotic relationship. They provide nutrients and increase the plant roots’ surface area, and the plants will produce sugars as fungi food. However, do note that there are still harmful fungi in the greenhouse.

Mushrooms are the good fungi, while the white powdery mold is an example of a harmful fungus that can be detrimental for your plants. Overall, mushrooms aren’t bad for your plants, but it’s better to get rid of them since they can make the greenhouse unsightly. Additionally, other human beings and pets may consume mushrooms, which can be harmful as some are very toxic. 


How To Control Mushrooms In The Greenhouse

As mentioned earlier, overwatering is a leading cause of mushroom growth in the greenhouse. Remember that water encourages mushrooms to grow because they thrive best in moist and humid environments. At the same time, be aware of contaminating your potting soil or mulch beds since mushrooms can also be airborne or transferred via clothing.

It can be hard to remove mature mushrooms because they can release more spores. Therefore, you can only remove small mushroom caps or use fungicide in the greenhouse. Lastly, ensure proper ventilation and air circulation in the greenhouse to prevent fungal growth. 



The thought of fungi growing in your greenhouse is unappealing. You might end up contemplating what are the tiny mushrooms growing in my greenhouse and immediately search for its species. However, there are so many mushrooms, so identifying what you see correctly is tricky. 

A typical small mushroom that grows indoors is the Leucocoprinus birnbaumii. Other species may also thrive in the greenhouse, given that the optimal growing conditions are available. The good news is other than being unsightly, mushrooms aren’t bad for your plants. 

Be aware of the potting soil you’ll use as this can cause contamination in the greenhouse. Overwatering and poor air circulation are two factors that can also support mushroom growth.

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How To Prevent Root Rot In Hydroponics: 3 Useful Tips

If you’re a newbie gardener who’s looking to find ways to hone your skills, you’d want to learn how to prevent root rot in hydroponics even before this problem affects your plants.

Hydroponics can be advantageous to crops in more ways than one. However, it also comes with risks of diseases, such as root rot, which can be destructive or even lethal to your plants.

Unfortunately, there are no effective methods to recover the wilted parts that were affected by the root rot once it hits your plants. The only thing you can do if you do not want this catastrophe to befall your crops is to prevent it before it happens. Read on to learn more about this subject.


What is Root Rot?

Root rot is a disease that attacks the plant roots and causes them to suffer decay. This usually happens when a lack of oxygen supply occurs in the substrate.

To give you an idea, think about plant roots that are submerged in water that only has a little oxygen in it. Over time, the plant suffocates and dies.

Aside from rot and decay, this disease also leads to the proliferation of fungi that are naturally present in the soil. These include Rhizoctonia, Alternaria, Pythium, Botrytis, Fusarium, or Phytophthora. As soon as fungi colonies start to grow, they tend to target the weakened roots and infect your precious plant babies.

Once the plant becomes infected, they won’t be able to take in what they need to grow – water, oxygen, and other nutrients. When this happens, it won’t be long before the plant dies.


What is Hydroponics?

In case you’re not aware, the term hydroponic is derived from a Latin word that means “working water”. To put it simply, hydroponics is an art that involves growing various types of plants without soil. If you’re like most people, the first thing that comes to mind when somebody talks about hydroponics would be a picture of plants with roots suspended into the water without using any type of growing medium.


Avoiding Root Rot in Hydroponic Systems

Detecting and identifying root rot can be tricky. When your plants get infected, their leaves and roots gradually wither until the whole crop itself dies from the lack of nutrients, which is a common symptom of many diseases.


What causes root rot in hydroponics?

One of the requirements in hydroponics systems is oxygen. Without it, your plants are basically on the road to death. On the other hand, lack of such is one of the major triggers for root rot, and it must be avoided at all costs.

Just like when planting in soil, you loosen up the ground so that your plants’ roots can have their required intake of oxygen. That is the case for crops grown in aqueous solutions as well. If they cannot breathe, they would not be able to grow.

Another agent for root rot is the temperature. The last thing you would want in your system are parasites that leech nutrients intended for your plants and infect the water during the process. In common terms, these fungi are called molds.

One of the best breeding grounds for these is warm and moist areas. For this reason, if the water temperature inside your reservoir is high, then you are susceptible to it. Something as minor as letting the solutions exposed to sunlight can already be a risk factor.


3 Useful Tips on How to prevent root rot in hydroponics

There is good news! Root rot in hydroponics can be prevented! Just follow these tips:

Tip#1: Use the right air pump

If you do not want root rot to affect your plants, you merely have to avoid its causes. If you need oxygen, keep the water bubbling by providing an air pump of appropriate size, and also give importance to proper ventilation in the room.


Tip #2: Maintain the temperature

The temperature should be maintained within the 70 to 80 degrees F range. Get rid of any materials that can make your system vulnerable to infections, and make sure not to disturb your crops while they are trying to grow.


Tip #3: Get rid of the rotten parts

However, if you failed in preventing the disease, then the rotten parts should be removed immediately. Cut them off as there is no chance of reviving them, and focus on the potential new growth instead. Fix your hydroponics system and eliminate the risks.


Why Give Greenhouse Gardening a Try?

Greenhouse gardening offers numerous benefits to greens aficionados who dare to take their gardening experience to the next level. Aside from acting as a shield against the effects of inclement weather, a mini, hobby, or semi-pro greenhouse can also serve as a protective layer that keeps harmful bugs and critters at bay.

What’s more, its enclosed structure allows you to control your plants’ growing conditions including the temperature, light, moisture, and ventilation of the greenhouse’s internal environment. With a controlled environment, you’ll be able to extend growing seasons and grow plants that aren’t native to your area.



No matter how well-informed you are about how to prevent root rot in hydroponics, you cannot completely eradicate the risks. Therefore, to avoid the worst-case scenario, you should be prepared to sacrifice the infected for the sake of others. While you’re at it, consider trying your hand at greenhouse gardening as well.


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