These pots are labeled generically as “plastic” and include specific materials such as polypropylene (PP) and polyresin/linear low-density polyethylene (polyresin).
Options include pots with no pre-drilled drainage, pots with multiple drainage holes or a water-permeable base, and self-watering systems such as bottom reservoirs equipped with water-level monitors.
Several planters use a double-wall or outer cavity that can be filled with sand or gravel (through a plug) to add weight and improve stability in windy areas.
Many listings describe the planters as suitable for both indoor and outdoor use. Several specifically note weather- and UV-resistant finishes or materials designed to resist cold and fading.
Self-watering options shown include half-circle wall planters with a bottom reservoir that waters roots from below, and tall rectangular planters with a bottom reservoir plus a clear water-level monitor and a separate water inlet.
Double-wall planters feature a full-depth inner wall that helps insulate and protect roots from temperature changes while preserving the inner soil capacity. The outer cavity can also be filled for added weight without reducing planting space.
Many planters are described as lightweight for easy moving; some larger rectangular models include wheels and planting baskets with hidden handles to simplify mobility.