Which statement about pot sizes in greenhouse production is NOT true?

The statement that a standard pot is shorter in height than width is correct in the context of common conventions in pot design for greenhouse production. Standard pots are typically designed to be roughly equal in width and height, which allows for uniformity in watering and airflow, and also supports healthy root development.

In contrast, the other statements reflect typical characteristics of various types of pots used in greenhouse production. A bulb pan being half as high as its width refers to a specific style often utilized for bulb plants, which need shallow roots for their growth. The statement regarding azalea pots emphasizes their design to be wider than tall, accommodating the growth habits of azaleas. Overall, noting the specific shapes and dimensions of different pots is essential as it relates to the type of plants they are intended to support, but in the case of standard pots, they are generally designed with proportional dimensions.