|I bought a variety of clay pots--some have black paint on the inside to protect the decorative exterior from minerals and fertilizer from leaching through and, some do not--What is that black material that is painted on the inside of the pot? And can I buy it at Home Depot?|
It could be several things from a black asphalt based material to some type of paint. Ask in the paint department for something that will coat and seal a Terra Cotta pot and they can suggest some good options.
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