Terracotta pot with internal glazing – Chelsea Flower Show 2010 garden product review
Terracotta is a beautiful material for garden pots. But it has two big problems (1) the plants tend to dry out if you do not water them each morning and each evening in hot weather (2) if saturated in winter then the terracotta tends to crack. This design provides a good solution – the salt glaze on the inside prevents water movement through the terracotta.