How to Grow Mushrooms: A Comprehensive Guide

Greetings, Challenger!

Growing mushrooms is an excellent way to have access to fresh and healthy produce. There’s something magical about cultivating these fungi in your own home, and it can also be a cost-effective hobby. However, it can seem overwhelming when you’re just getting started. That’s why we’ve created this guide to take you through every step of the process. From choosing the right species to harvesting your crop, we’ve got you covered.


Before we dive into the technical aspects of mushroom growing, let’s first discuss the benefits of cultivating mushrooms. Apart from being a delicious addition to any meal, mushrooms are loaded with essential nutrients. They are highly nutritious, low in calories, and loaded with antioxidants. Different species of mushrooms have unique benefits, so it’s crucial to choose the species that will offer you the most health benefits.

Additionally, growing your mushrooms is an eco-friendly way of getting your produce. You’ll have control of what goes into growing them and can be assured that there are no harmful chemicals in your food.

In this guide, we’ll show you everything you need to know to successfully grow mushrooms. We will cover the different types of mushrooms, the best ways to grow mushrooms, common mistakes to avoid, harvesting techniques, and much more.

Types of Mushrooms

There are thousands of species of mushrooms worldwide, but not all of them are suitable for growing indoors. Some of the most popular mushrooms grown indoors are:

Species Characteristics
Button Mushrooms A mild taste, pale white to light brown in color, and the most commonly consumed mushroom in the United States
Shiitake Mushrooms An intense, earthy taste, brown in color, and commonly used in Asian cuisine
Oyster Mushrooms A delicate, subtle flavor, typically gray or light brown colored, and commonly grown in clustered bunches
Porcini Mushrooms Unique nutty flavor and typically brown in color, commonly used in Italian dishes

These mushrooms are the best options for beginners since they are less challenging to grow. However, the cultivation process is similar regardless of species.

Choosing a Growing Space

The next step is to choose the right location for your mushroom growing project. The ideal growing space should be warm, out of direct sunlight, and have adequate ventilation. The temperature of the growing area should be maintained between 55 and 65 degrees Fahrenheit, or as specified for the specific species that you want to grow.

A suitable location can be a spare room, basement, or other indoor space, where you can control the temperature, humidity, and light. More experienced cultivators could also grow mushrooms outdoors in a shaded area where moisture is available.

Preparing the Substrate

A “substrate” refers to the growing medium used to support the growth of mushrooms. Mushroom growers have many choices when it comes to substrates, including sawdust, straw, coffee grounds, and even cardboard. Substrates can be purchased at gardening centers or online.

Sterilization is crucial to prevent contamination before inoculation. Inoculation is the process of placing mycelium (the thread-like growth of the mushroom) into the sterilized substrate. The mycelium will grow into the substrate, producing the fruiting bodies that we recognize as mushrooms.

The sterilization process varies depending on growing methods and the substrate. The most common methods include pasteurizing substrates using heat, chemicals, or both. Two popular sterilization techniques include pressure-cooking or microwaving.


After you have sterilized the substrate, it’s time to inoculate it with spores or spawn. Spawn refers to the vegetative growth of the mushroom that does the inoculation. Spores are another way to inoculate, but grow slower and are less sure to produce results.

You can purchase ready-to-use spawn or spores from any reputable gardening or online store. Before inoculating the substrate, ensure that the spore or spawn you are using is specific to the species of mushroom you want to grow.


After inoculation, the substrate needs to be kept in a warm, dark location for around two weeks to allow the mycelium to establish itself. During the incubation period, the mushroom will use the nutrients in the substrate to form its body system.

You must keep the substrate at a temperature between 70 and 75 degrees Fahrenheit, so the mycelium won’t dry out or die. In addition, the humidity level should be 95 percent, which can be maintained through covering the growing substrate with clear plastic or a humdome that you can purchase from a gardening store.


Fruiting refers to the process of cultivating the mushroom fruiting bodies, which can begin once the mycelium fully colonize the substrate. The fruiting period typically lasts for several weeks, during which mushrooms begin to grow out from the substrate.

For the fruiting body to grow successfully, the temperature and humidity should be adjusted. For instance, lowering the temperature to between 55 and 60 degrees Fahrenheit, and reducing the humidity to around 75 percent. You will also need to increase air circulation by providing a small fan to reduce the risk of contamination.


Once your mushrooms reach maturity, they’re ready to harvest. A mature mushroom usually has an open cap to expose its gills and measure between 2-4 inches tall.

To harvest, carefully twist or cut the mushrooms at their base. It’s essential to avoid damaging the mycelium that connects the mushroom cap to the substrate since it will be used to produce future harvests.

Common Mistakes to Avoid

While growing mushrooms might seem straightforward, there are quite a few mistakes beginners can make. Some common mistakes include using incorrect growing mediums, not keeping the temperature and humidity levels balanced, not sterilizing the growing space, and failing to monitor for contamination.

Therefore, it’s crucial to research and follow the instructions provided by the species-specific research. Ensure that you have a sterile environment and adhere to the specific conditions required for each species.


What is the best mushroom to grow for beginners?

The best mushrooms for beginners to grow are versatile and easy to care for. Some popular species include oyster, shiitake, and button mushrooms.

How long does it take to grow mushrooms?

Growing mushrooms can take around 3-5 months, from preparation to harvesting.

How do you know if your substrate is good for mushrooms?

The substrate should be nutrient-rich, well-draining, and have the right humidity to support mushroom growth. Test your substrate by observing how quickly it drains and whether mushrooms can grow in it.

What is mushroom spawn?

Mushroom spawn refers to the vegetative growth of the mushroom that does the inoculation. If you order spawn, it will usually come in a variety of grain-based mediums, and you can use it to inoculate your growing substrate.

How much light do mushrooms need to grow?

Mushrooms do not need light to grow since they are fungi and don’t engage in photosynthesis. The amount of light should be kept low to prevent the growth of competing organisms like mold.

Can you eat all kinds of mushrooms?

No. Some mushrooms can be deadly or cause severe illness. Therefore, it’s essential to consult an expert and research the properties of the species you plan to consume.

Do mushrooms have medicinal properties?

While many types of mushrooms are used in traditional medicine, more research is needed to ascertain their efficacy.


Growing mushrooms is not only a fascinating hobby but also a cost-effective and eco-friendly way of ensuring a constant supply of fresh produce. However, it takes some effort and attention to detail to reap maximum benefits.

In summary, choose the right species of mushrooms, prepare the right substrate, maintain temperature and humidity conditions, monitor for contamination, and harvest the mushrooms when mature. By following these guidelines, you can successfully cultivate mushrooms and reap their benefit.

We hope that this guide has been informative and helpful to you in your mushroom-growing endeavors. We encourage you to begin your growing adventure and experiment with different species, substrates, and growing methods.


While the tips and tricks in this article can help ensure a successful mushroom-growing experience, we cannot guarantee the outcome of your project. Cultivating mushrooms can be a challenging process that requires attention to detail, and even the best growers encounter setbacks.

Moreover, mushrooms can be toxic if not grown or consumed correctly. Therefore, you should consult an expert or conduct extensive research on the species that you intend to grow, and what conditions will produce the best outcomes.