If moisture is trapped in pots, the roots eventually rot. Natural materials such as wood and terra cotta permit water to evaporate through the sides of the pot. This also means that such pots dry out faster than plastic or glazed-ceramic containers. Terra-cotta pots work well in a casual garden setting and enhance a concrete or flagstone patio.
Wooden containers come in a variety of types.
The best are made from redwood or cedar, woods that resist decay. If you select a container made of wood other than redwood or cedar, you can make it last longer by lining the sides with black plastic sheeting, a garbage bag or landscape fabric. If the lining isn't porous, don't line the bottom of the container, which would inhibit drainage. Strawberry-jar planters make wonderful containers for any type of plant, from herbs to annuals. Usually made of terra cotta, they come either glazed or unglazed.