How to grow mold: 10 steps (with pictures)

Mold is a fungus that has several uses, it is common and its reproductive spores are present almost everywhere, both in the air and on surfaces. Interestingly, it is an organism that can make people sick and spoil food, but at the same time, it has been used to preserve other foods and also produces components that are used in the production of medicines. Growing mold is a great way to learn about this unique organism. With the instructions in this article, you can grow mold in no time.

Steps

Part 1 of 2: Learn About Mold

Step 1. Understand what mold is

Mold is just one of the many types of fungi that humans come in contact with every day. Molds are scientifically defined as multicellular organisms of the fungal kingdom (a taxonomic order on the same level as plants or animals). The simple organism, made up of genetically identical cells, is known as mycelium.

Step 2. Investigate how molds impact life on earth

Most people recognize mold as the hairy or discolored spot on a slice of bread or a piece of fruit, but not all mold is undesirable. Some help preserve food, as in the case of certain cheeses. Others, like penicillin, provide vital antibiotics for humans. Molds and other fungi also play a vital role in the decomposition process. They degrade the structures of plant and animal cells and allow the nutrients they contain to re-enter the food chain.

Step 3. Know the three things all molds need

Molds are living organisms and, in fact, their cellular structures resemble those of animals more than those of plants. Like everything that is alive, molds need water, a food source, and the right environment to thrive.

Like animals, neither molds nor fungi can produce food internally. They must get all the calories and nutrients they require to function from an outside source. Molds are generally not very picky, some grow well on starchy foods, others on fruits and vegetables, and still others will sprout from the small strips of organic matter (mostly on paper) found on damp plaster walls..
Molds survive best in wet environments. Of course, most living things are near water, but molds are especially dependent on it. Unlike plants and animals, molds use an external digestion process. Dry environments make it difficult for molds to absorb nutrients, so consider that they will not grow if they do not have access to moisture.
Most forms of mold also prefer warm temperatures. There are two primary reasons for the above. The enzymes used by molds in both external digestion and internal cellular processes work best at temperatures well above freezing. Furthermore, molds are multicellular organisms without complex circulatory systems and it is easier for them to transfer nutrients from cell to cell in warm environments than in cold ones.
Although a few molds are sensitive to light, most are not directly affected by sunlight. Molds generally do not grow in sunny locations just because such areas are prone to drying out.

Part 2 of 2: Grow Your Own Mold

Step 1. Identify a potential food source

As stated above, almost anything that has ever been alive (and some that were not) are potential food sources for mold. However, some molds are more common than others.

One of the most common molds is penicillin, which often grows on bread. Bread is suitable for mold for the same reason that it is great food for people. The organic matter of the grains with which it is made has already been partially disposed of. As in the case of humans, mold is easier to digest than the grains themselves.
Dairy products, and cheese in particular, are also a good way to effectively grow mold. It may be easier to track mold growth in mold-free cheese such as soft mozzarella. On the other hand, some cheeses contain live mold on the inside or on an outer shell. These cheeses could serve as food and a source of mold.

Step 2. Find a suitable container

Be aware that molds release spores that can cause allergies, and some can even lead to infections. While most are harmless, it is wise to protect yourself. Look for a potential container in which mold can grow, the best are transparent ones, so you can observe the growth of mold without exposing yourself to it. They should also have airtight lids that keep water out. Even if you don't add moisture, the decomposition process will likely be unpleasant.

One of the best container options is a resealable clear plastic bag. You will be able to observe the growth of mold and keep it perfectly contained. You may want to use a good quality plastic bag, as if the seal ever breaks, it could lead to very nasty dirt.
Due to all of the above reasons, it will be best if you find a disposable container. Once you've created a mold-filled container, you shouldn't open it.

Step 3. Find the ideal medium

As noted above, you don't need to keep mold in a dark place, but be aware that high exposure to sunlight could potentially dry it out. Also, while some can grow in cold environments, most do best in warm temperatures. Find a warm, sheltered place to keep mold as it grows.

Step 4. Seal the mold's food source inside the container

Mold spores are everywhere, so you won't need to "seed" them into the food source, they will certainly already be there.

Make sure the environment inside the container is humid enough. Keep in mind that your goal is to seal the container and never reopen it while growing mold. If the food source dries up while you wait for mold to grow, you may need to open the container and add more water. At the same time, most molds don't grow directly in water, so keep the food source moist without soaking it

Step 5. Check mold growth progress every day

Check the packaging regularly, if possible every day. If there is apparently no mold and the food source looks dry, open the container and sprinkle a few drops of water on it.

If you open the container, it might be a good idea to wear disposable rubber gloves and a mask that covers your face and nose. Keep in mind that even if you can't see the mold, it could still be growing. Most molds aren't dangerous, but some can be, so don't take any chances

Step 6. Research the mold you grew

Observe it carefully and note the colors and shapes of the mold patches. These characteristics can tell you the type that is growing in the food source. You can find out more about common molds by doing your research online or by visiting the United States Department of Agriculture website (link is below).