What is growing on the side of my cactus?

Answered by Douglas Hiatt

The growths that you are observing on the side of your cactus are known as aerial roots. These roots serve a specific purpose for the cactus, helping it to reach sunlight and absorb the necessary moisture and nutrients from its surroundings.

Aerial roots are a natural adaptation of certain cacti species and are not a cause for concern regarding the health of the plant. In fact, they play a vital role in the survival and growth of the cactus. These roots have the ability to absorb moisture and nutrients from the air, as well as from the soil. They can also establish a connection with other nearby plants, utilizing them as a source of additional nutrients.

One of the main functions of aerial roots is to help the cactus reach sunlight. Cacti are often found in arid regions where sunlight is abundant, and these roots allow them to grow taller and closer to the sun, maximizing their exposure to sunlight. This is crucial for the process of photosynthesis, where the cactus converts sunlight into energy.

In addition to sunlight, aerial roots also play a role in water absorption. Cacti are adapted to survive in dry environments, and their roots are designed to efficiently absorb and store water. Aerial roots are no exception to this, as they can absorb moisture from the air, helping the cactus to supplement its water intake during periods of drought or limited rainfall.

While aerial roots serve important functions for the cactus, they can be aesthetically displeasing to some individuals. If you find the appearance of these growths undesirable, you have the option to trim or prune them. However, it is important to note that removing the aerial roots will not harm the cactus, as they are not essential for its survival.

The growths on the side of your cactus are aerial roots, which serve the purpose of helping the plant reach sunlight and absorb necessary moisture and nutrients from its surroundings. They are a natural adaptation of certain cacti species and are not a cause for concern. However, if you find them unappealing, you can choose to trim them without harming the plant.