Popular shrub or small tree from China and Japan. Excellent plants for formal gardens. The deep green glossy foliage and wide variety of flower types and colours wakes this a valuable plant in many gardens.  Can be trained as an espalier or clipped as a hedge. Tea is a variety of Camellia. 
Given the wide variety of cultivars available, it's best to visit or contact your local nursery or Camellia association for advice on the best choices for your location.