Like anything, the better you care for your Oyas the longer they’ll last. Good news is that it’s easy to care for an Oya. Just pull them up before the ground freezes, clean them off and store dry. The water in the walls of the Oya will expand when frozen and could crack your Oyas.

When you pull them up from the ground clean off all the roots and soil from the outside with water and a stiff brush—you can use a 1:10 vinegar to water solution if you’re feeling thorough—and rinse out the inside of the Oya. This cleaning removes the dirt buildup and helps keep the porosity as it should be. Store your Oyas dry so they’re ready to go next year. That’s it.