Described is a plant pot system that can house plant growing media or soil designed for multistage growth of plants. The plant pot system includes a pot with a divider slot in the sidewall and a divider which is removably insertable into the divider slot of the pot. When the divider is inserted into the divider slot of the pot, the pot is divided into an upper section, which provides a smaller space for a young plant to establish healthy roots, and a lower section. Once the plant has reached an appropriate stage of development, the divider can be removed from the pot, allowing the plant to utilize the remaining growth media in the lower section for the next stages of growth and maturity. This eliminates the need for transplanting the plant into a different, larger container for next stages of growth.