For measuring containerized plants, what system is most commonly used?

The square measurement system is the most commonly used for measuring containerized plants because it effectively addresses the volume occupied by the plant's root system, which is essential for ensuring healthy growth. In this system, the dimensions of the container are typically taken into account, allowing for a straightforward calculation of the overall space the plant occupies. This square format helps in uniformly assessing plant size, as many containers are indeed square or rectangular in shape.

Using measurements based on a square system helps in standardizing the evaluating criteria across various nurseries and suppliers, making it easier for buyers or landscape professionals to make informed decisions about the size and space requirements of the plants they intend to purchase and install. This method aligns well with industry practices, where consistent sizing is crucial for landscaping projects, ensuring that the plants fit appropriately in their intended settings.

Other measurement systems may be less prevalent because they might not accurately represent the volume or physical space needed, as the square system does, making it the preferred choice in the context of containerized plants.