Purple Compost Crock Posted bymnsternadminDecember 14, 2011December 20, 2011Posted inCeramics This is a ceramic crock for holding compost. The lid has a few holes in it for airation, and there is a filter on the inside of the lid. It says “compost crock” on the top of the lid. Blue, brown, and purple glazes. 2011. SOLD