Growing Mushrooms in a Terrarium

Mushrooms are a fantastic addition to any terrarium. Not only are they beautiful, but they also provide a source of food for your other plants and animals in your terrarium. Growing mushrooms in a terrarium is not overly difficult, but there are some important steps to follow to ensure their success.

Materials Needed

When considering growing mushrooms in a terrarium, the first step is to gather the materials needed. You will need a terrarium, potting soil, mushroom spawn, and a container to hold the mushrooms. Depending on the species of mushroom you are growing, you may also need a temperature and humidity control device, as well as a light source (for some types of mushrooms -- many can grow and fruit in near perfect darkness).

Choosing a Terrarium

When selecting a terrarium, you want to make sure it is the right size for the mushrooms you are planning to grow. Generally, the terrarium should be at least 8-12 inches (20-30 cm) deep, and larger if you plan on growing larger mushrooms. The terrarium should also have plenty of ventilation, as mushrooms need fresh air to grow.

Preparing the Terrarium

Once you have chosen a terrarium, the next step is to get it ready for the mushrooms. Start by cleaning the terrarium, removing any debris or dirt, and then disinfecting it with a bleach solution. Allow the terrarium to air dry, and then add a layer of potting soil that is at least 4 inches (10 cm) deep. Make sure the soil is moist, but not overly wet.

Using Mushroom Spawn

Mushroom spawn is the material used to grow mushrooms, and it can be purchased at most gardening stores or online. Spawn is generally made up of a combination of sawdust, straw, and other organic materials. When using spawn, you want to make sure you have enough to cover the entire surface area of the terrarium.

To apply the spawn, spread it evenly over the surface of the soil and gently press it down with your fingers. The spawn should be no more than 1/2 inch (1 cm) thick. Once the spawn is applied, mist it lightly with water and cover the terrarium with a thin layer of plastic wrap to trap moisture and keep the spawn moist.

Temperature and Humidity

Mushrooms prefer a warm, humid environment, so you will need to make sure your terrarium is kept at a temperature between 60-70°F (15-21°C). You may also need to use a humidity control device to maintain the humidity level at around 70-85%.

Lighting

Some species of mushrooms require a light source in order to grow, while most do not. If yours require light, you can use a fluorescent light placed inside the terrarium. Make sure to place the light so that it is not directly on the mushrooms, as this can cause them to become too hot.

Harvesting the Mushrooms

Once the mushrooms have grown, you can harvest them. The best time to harvest them is when the caps are still closed and before the gills start to separate. Gently remove the mushrooms from the surface of the soil and place them in a container.

Mushrooms have the potential to be a great addition to any terrarium. With the right materials, temperature and humidity regulation, and proper care, you can successfully grow mushrooms in your terrarium and enjoy their beauty.