Japanese Mazus is a plant with a native distribution spanning across Eastern and Southeastern Asia. It thrives in a variety of habitats within this region. Additionally, japanese Mazus has been introduced to a broad range of areas on other continents including parts of North America, South America, the Pacific Islands, and Europe. As a result, japanese Mazus has spread beyond its original habitat, adapting to new regions across the globe.

Japanese Mazus originally hails from East Asia, but its tenacious nature has allowed it to spread worldwide. It is considered a weed because of its rapid reproduction and aggressive growth patterns. Japanese Mazus is capable of crowding out desired plants, denying them necessary nutrients, sun, and space. Its robust root system makes it hard to eradicate completely, allowing the plant to come back with every favorable growing condition, which induces garden havoc. Its evolution has endowed it with a fast reproduction rate, forming a dense mat-like structure that spreads quickly, suppressing native species' growth. In addition, it also harms gardens by reducing biodiversity and creating ecosystem disruptions. Lastly, the main method by which japanese Mazus spreads is through its seeds. When mature, these seeds are dispersed by the wind, water, or animals, effortlessly establishing new colonies in distant locations. This method of propagation not only enables it to invade new areas swiftly but also makes controlling and eradicating it a challenging task.

The best season for the removal of japanese Mazus is during early spring, before it has a chance to flower and set its seeds.