Terracotta

Terracotta is a specific, widely recognized type of earthenware, named from the Italian for baked earth, and its warm reddish orange to brown color comes from natural iron content in the clay body itself rather than from any added colorant. It fires at low temperatures, in the same general cone 06 to cone 04 range as other earthenware, and like the broader earthenware family it stays somewhat porous unless it is fully glazed on every surface that needs to resist moisture.

Its most familiar use is the classic unglazed garden flower pot, where terracotta's slight porosity is actually an advantage, letting a little air and moisture pass through the walls in a way that benefits plant roots and helps prevent waterlogged soil. Beyond the garden, terracotta has a long tradition in sculpture, roof and floor tiles, and decorative pottery, often left partly or fully unglazed to show off its natural warm color rather than covering it entirely.

For functional pieces meant to hold food or liquid, terracotta needs the same careful attention to glaze fit and coverage as any earthenware, since its natural porosity and relatively low firing temperature make it more prone to absorbing moisture and eventually cracking or staining under repeated use than a vitrified stoneware body would be. Potters choosing terracotta for planters or garden ware generally leave it unglazed on purpose, while anyone planning terracotta dinnerware should look specifically for a durable, well fitted, food safe glaze covering the entire interior.