Diamond Line Plastic Terra Cotta Saucer Planter or Drainage Dish (7 Inch) Terra Cotta Colored Plastic Planter or Drainage Dishes Each Size up is a heavier material with taller sides We use for making dishgardens, as drainage under plants and floral arrrangement containers Sides start at about 1 Inch and increase with each size up. Size is the measurement across the Top of the dish.