I actually use a diamond bit to drill holes in ceramic plates just like the ones I used for glass plates. The pottery tends to drill easier, you just have to take your time. Hopefully some of our other members will post too...I know a lot of them use all kinds of containers to plant in.

Good luck and welcome!

I just wanted to say something about the crock pot. I have one too but have found that it's still so handy in the kitchen that I ended up not wanting to give it up to being a planter. The thickness of it makes such a perfect vessel for cold summer salads on hot days. When chilled overnight, it can keep potato or macaroni salad chilled for at least an hour, depending on the density/moisture content of the food. Packing it full and putting it in the cooler is almost like adding some ice. I use plastic wrap held with a rubber band to keep everything tidy, or just foil or a plate sitting on top of it if we're using it at home.

Also works with hot foods, especially at Thanksgiving when not everything fits in the oven at the same time. I can squeeze it in with the turkey roasting pan and make sure green bean casserole or dressing is ready & (stays) hot before doing some smaller last-minute things.

It is also the perfect size thing to put a whole chicken body if I don't feel like picking it clean after dinner. Cover it & get to it tomorrow.

You can freeze it and make ice cream in it although stirring isn't as easy as one of those deals with the built-in stirring handle.

I've gotten more use out of this darn thing than when it was a crock pot and have since bought a sauce pot with a lid that also fits right inside the lip of the crock pot. Just something to think about.