Here is a great gardening idea from designer Joey Roth – a self-watering planter. Made from naturally porous unglazed earthenware, the piece retains water in its clever central chamber. This water then seeps into the surrounding soil and hidrates the plant. The designer claims that the concept has been inspired by the Olla, an ancient irrigation tool that farmers still use to conserve water in arid climates. Although the item is not particularly compact, it is capacious and can fit up to three herbs or six succulents. An excellent contender for an indoor/outdoor garden in a pot.