How to Build a Mushroom Growing House: Step-by-Step Guide

Choosing the Right Location for Your Mushroom House

mushroom growing house

Growing mushrooms is a great way to get fresh, delicious produce without relying on the supermarket. Whether you’re looking to start a small business or just want to grow them for personal use, the key to a successful mushroom growing operation is choosing the right location for your mushroom house.

There are a few important factors to consider when selecting a location for your mushroom house. The first is sunlight. Mushrooms don’t need a lot of direct sunlight, but they do need some natural light to grow properly. It’s best to choose a location that gets some filtered sunlight throughout the day, but isn’t exposed to direct sunlight for more than a few hours at a time. Too much direct sunlight can cause the growing media to dry out too quickly, which can be fatal for your mushrooms.

The second important factor to consider is ventilation. Mushrooms need plenty of fresh air to grow properly, so it’s important to choose a location with good ventilation. Ideally, your mushroom house should have windows or vents that can be opened and closed as needed to control the temperature and humidity inside the growing area.

The third factor to consider is temperature. Most varieties of mushrooms prefer a cool, damp environment to grow in. As a general rule, the ideal growing temperature for mushrooms is between 55 and 65 degrees Fahrenheit. If your mushroom house gets too hot, your mushrooms won’t grow properly. If it gets too cold, they may stop growing altogether. Make sure to choose a location that stays within this temperature range.

Finally, it’s important to consider the location of your mushroom house in relation to other structures and activities on your property. You don’t want to place your mushroom house too close to other buildings or activities that generate heat, such as a greenhouse or a compost pile. You also want to make sure that you have easy access to water and electricity, as you’ll need to keep your mushroom house moist and you may need to run lights or other equipment.

With these factors in mind, you’re ready to start looking for the perfect location for your mushroom house. Keep in mind that it may take some trial and error to find the ideal spot, but by paying attention to sunlight, ventilation, temperature, and infrastructure, you’ll be well on your way to a successful mushroom growing operation.

Designing the Structure of Your Mushroom House

Designing the Structure of Your Mushroom House

Now that you’ve identified the type of mushroom you want to grow, you need to design your mushroom house to create the optimal growing environment. The correct design elements in your mushroom house are important to ensure high-quality yields, minimal contamination and efficient energy usage. In this subsection, we’ll discuss some of the essential design elements you should consider when building your mushroom growing house.

Climate Control

Controlling the climate is an essential factor in creating a conducive environment for your mushroom growing house. Mushrooms require a specific range of temperature and humidity to grow, and any variation from the optimal range can hinder their growth or destroy the crop. The ideal temperature for most mushrooms ranges between 55 to 65 degrees Fahrenheit, and the humidity level should range between 80 to 85 percent. Therefore, your mushroom house should have an automatic system that monitors the temperature and humidity levels continuously.

Your mushroom house should also have proper insulation to maintain the temperature and humidity at the desired levels and minimize energy loss. You can use heat-insulating materials, such as fiberglass insulation or polystyrene foam sheets, to prevent heat loss through the walls, floors, and ceiling. An efficient climate control system will minimize energy consumption while ensuring optimal growing conditions for your fungi.


Lighting is another design element to consider when building your mushroom growing house. While mushrooms don’t require light to grow, proper lighting can make harvesting more accessible and aid in pest management. Thorough lighting can help you identify when it’s time to harvest, making it easier to monitor growth stages, leading to an efficient harvesting process.

You can use low-wattage lighting fixtures with low heat output, such as LEDs or fluorescent bulbs, to provide adequate light. However, avoid using direct sunlight or high-intensity light, as this can harm the mushrooms. Additionally, indirect lighting can help deter pest infestations, as those usually thrive in dark areas with high levels of humidity.


Ventilation and airflow play an essential role in creating the optimal growing conditions for your mushrooms. Proper ventilation helps reduce carbon dioxide levels in the mushroom house and increase oxygen levels, creating more favorable growing conditions.

Your mushroom house should have several exhaust fans that provide adequate airflow while keeping the humidity levels at optimal levels. Additionally, you can install intake fans with filters to keep out contaminants and insects that may interfere with the growth process.

Layout and Space Management

The layout and space management of your mushroom house are crucial in ensuring efficient operations and high yields. The floor space for your mushrooms should allow you to move around without damaging the fungi or disturbing the growing environment. Space management is critical in the storage of harvested mushrooms before sales or transportation.

You should also install proper mushroom shelving systems, such as vertical racks, to maximize the use of your mushroom house space. A vertical layout allows you to use the available space efficiently and create the optimal growing conditions for your mushrooms.

Designing your mushroom growing house to suit your specific needs is essential to ensuring optimal growing conditions and high yields. With these design elements in place, you can expect to minimize contamination, reduce energy consumption, and streamline your mushroom growing process.

Setting Up an Efficient Ventilation System

Ventilation System Mushroom Growing House

Proper ventilation is crucial in mushroom growing houses to maintain the ideal level of temperature and humidity needed by the mushroom spawn to grow. Without proper ventilation, the growing environment of the mushrooms can become moist, stuffy, and stagnant, which can lead to the growth of harmful contaminants such as bacteria and molds. This can easily kill off the mushroom spawn or even worse, contaminate the entire growing house, compromising the entire crop yield. That’s why setting up an efficient ventilation system should be a top priority when building a mushroom growing house.

There are different types of ventilation systems that can be used in mushroom growing houses, such as passive and active ventilation systems. Passive ventilation systems include vents, air shafts, and windows that can be opened and closed to regulate temperature. On the other hand, active ventilation systems utilize fans, blowers, or other mechanical devices that provide airflow inside the growing house. The best option will depend on various factors like size, location, budget, and the growing method you plan to use.

One great option is installing a combination of both passive and active ventilation systems. This comprehensive approach can create a more stable growing environment by allowing adequate air circulation throughout the growing house. Below are some tips to help you set up an efficient ventilation system for your mushroom growing house:

Install Adequate Vents and Windows:

Air Vents Mushroom Growing House

Installing vents and windows at strategic points will facilitate airflow throughout the growing house. Place vents and windows on opposite walls to promote cross ventilation and place them low on one side and high on the opposite to create a natural convection current that draws out hot moist air and pulls in fresh air.

Use Circulation Fans:

Circulation Fans Mushroom Growing House

Circulation fans help to distribute air more evenly and maintain a constant temperature throughout the growing house. Consider placing one in each corner of the house and adjust it to blow gently downwards to cool the house.

Install Exhaust Fans:

Exhaust Fans Mushroom Growing House

Exhaust fans help draw out excess moisture and stale air from the growing house. Place them on the opposite wall to the air inlet, facing out of the house to promote air exchange and prevent fresh air from being drawn back outside.

Consider Temperature Control:

Temperature Control Mushroom Growing House

If you live in an area with fluctuating temperatures, or if your growing house is in an area of the garden that is prone to direct sunlight, you will need to consider a temperature control system. This can be done using thermostats, which activate the ventilation system when a certain temperature is reached. You can also consider using insulation materials or shading systems to keep temperatures within the ideal range.

Setting up an efficient ventilation system is possibly the most important factor to consider when building a mushroom growing house. You may need to experiment with different systems or adjustments to find the most suitable system for your setup. When you get it right, however, you will have created the perfect environment for healthy mushroom growth and a great harvest.

Preparing the Growing Environment for Your Mushrooms

Preparing the Growing Environment for Your Mushrooms

If you’ve decided to start growing mushrooms, congratulations! It’s a fun and rewarding experience that can provide you with a steady supply of delicious and nutritious fungi. However, before you start filling your house with mushroom growing supplies, you need to prepare your growing environment. Here’s how:

1. Choose your location

The first step in preparing your growing environment is to choose the right location. An ideal mushroom growing house should be cool, dark, and humid. Is it possible to keep the temperature between 55 and 65 degrees Fahrenheit and maintain 85 to 90% humidity.

A basement or a room with little to no natural light usually provides the perfect environment for growing most varieties of mushrooms. Make sure the room is clean and free of any mold or mildew, as mushroom spores won’t grow in areas contaminated by other fungi. Also, consider the availability of electricity and water, as you’ll need both to run your mushroom cultivation equipment.

2. Plan your growing space

Once you’ve identified the right location, it’s time to plan your growing space. You need to decide how much space you’ll need and what type of mushroom you’ll grow. Depending on the type of mushroom you want to cultivate, you may need shelves, bins, or trays to house your growing substrate.

You’ll also need to factor in the equipment you’ll need, such as lighting, a humidifier, and fans. Plan your growing space carefully, keeping in mind any restrictions on the height or width of your growing area. You want to make the most of the space available, as mushrooms need enough room to grow and develop their fruiting bodies.

3. Prepare the substrate

The next step is to prepare your mushroom substrate. This is the material on which your mushrooms will grow. The most common substrate for growing mushrooms is a mixture of hardwood sawdust and wheat bran, which provides the nutrients and moisture that the mushrooms need.

You can also use a variety of other materials, including straw, coffee grounds, and even cardboard. Whatever substrate you choose, make sure it is clean and free of any contaminants that could harm your mushrooms.

Once you’ve prepared your substrate, you’ll need to sterilize it to kill any wild fungal spores or bacteria that could compete with your mushroom spawn. Sterilization can be done by boiling the substrate or using a pressure cooker, depending on the amount you need to sterilize and the equipment you have available.

4. Choose the right mushroom species

Finally, you need to choose the right mushroom species for your growing environment. Different types of mushrooms require different growing conditions, so it’s important to choose a species that can thrive in the environment you’ve created.

Some of the best species for beginner growers include button mushrooms, oyster mushrooms, and shiitake mushrooms, as these varieties are relatively easy to cultivate and require minimal attention.

Other, more exotic varieties, like lion’s mane and reishi mushrooms, may require more specific environmental conditions or specialized equipment. Before you commit to growing a particular species, do your research to make sure you can provide the right growing conditions and meet the demands of that particular mushroom species.

By following these steps, you’ll be well on your way to creating the perfect environment for growing mushrooms. Remember to be patient and attentive throughout the process, as growing mushrooms requires attention to detail and careful monitoring of growing conditions.

Maintaining Proper Humidity and Temperature Levels

mushroom growing house humidity and temperature

Proper humidity and temperature levels are essential to ensure a good crop yield and healthy mushroom growth. It is vital to control these factors throughout the growing process because mushrooms thrive in a specific range of humidity and temperature. Let’s take a look at how you can maintain the correct humidity and temperature levels in your mushroom growing house.

Firstly, it’s important to monitor the humidity and temperature of the mushroom growing house on a regular basis. You can do this with the help of a hygrometer and a thermometer. Ideal temperature for mushroom growth is between 50 to 65°F, and ideally 55 to 60°F. Humidity levels should remain at around 80 to 90% above throughout the growing process.

Secondly, to maintain proper temperature and humidity levels, you will have to invest in a good quality heating and cooling system. You can use HVAC systems, which are commonly used for climate control in homes and offices. Alternatively, you could use fans or dehumidifiers to regulate the temperature and humidity in your mushroom growing house. It’s important to ensure your equipment is properly installed, maintained, and functioning correctly.

Thirdly, misting the mushroom growing house with clean water will help to control the humidity levels. The frequency of misting will depend on the temperature inside the mushroom growing house, and it is important to maintain consistent humidity levels throughout the day.

Fourthly, proper ventilation is important for controlling humidity levels because excess moisture can lead to mold growth. Ventilation is the primary method for regulating humidity in the mushroom growing house. Air circulation helps to prevent condensation buildup on surfaces, which can be a breeding ground for mold and bacteria. Proper ventilation can be achieved by installing air vents or fans in the mushroom growing house.

Finally, you can supplement your efforts with natural methods to control the humidity and temperature of the mushroom growing house. Placing a tray of water inside the mushroom growing house can help to generate moisture, which will increase humidity levels. Use shading materials to control solar radiation or install a greenhouse plastic cover to regulate temperature and keep the conditions constant.

In conclusion, controlling the humidity and temperature levels within your mushroom growing house is vital to ensure a good crop yield and healthy mushroom growth. Proper monitoring, ventilation, misting and using natural methods in addition to investing in a good quality heating and cooling system will help you maintain optimal environmental conditions. With these measures in place, you’ll be well on your way to growing high-quality and delicious mushrooms in your own mushroom growing house.