Glazed Green LinesSerax has it roots in creating vessels for floral display. These glazed green lines planters could be easily mistaken for vases, they have an elegant tapering form. This indoor pot is treated with a thin waterproof coating on the inside, but this does not guarantee 100% watertightness. Therefore, the plant should be left in its plastic pot with a saucer or a liner should be used inside. Cracks can form if the plant is planted directly in the pot.