How To Seal A Resin Container

Question From: A. Marlowe - ARIZONA
Q: I have purchased two trellises with planters attached to both sides. They are made of resin and the planters are not sealed. I want to plant Calla Lillies and boston ivy but don't want to lose potting soil when I water. The planters are just about 12" square inside. What would be the best product and least expensive to line these planters with?

A: Sorry, I can't advise as I can't visualize the container. Take photos of the containers including the interior to an independent garden center or nursery that sell a variety of containers and liners for first hand advice or Google how to seal a resin container for various options. Best And Happy Yardening, Nancy.