Terracotta pots are heavier and cost more than plastic pots. They are also fragile and can break easily if dropped. When watered, terracotta pots turn darker in colour. This makes it easier for gardeners to know when it is time to water their plants. Terracotta pots are porous and need to be watered frequently, especially in hot climates. As such, terracotta pots are good for plants that prefer drier soils such as succulents.