Caustic wax is not typically obtained from planters or plants in any common context. Caustic wax is a chemical substance used in various industrial applications, and it’s not something that naturally occurs in plants or can be harvested from them.

If you have a specific use for caustic wax or if you need to acquire it for a particular purpose, you would typically obtain it through chemical manufacturing or industrial supply channels. Caustic wax is not a substance found in nature or commonly associated with planters or gardening.

It’s essential to handle caustic substances like caustic wax with care and follow safety precautions, as they can be harmful to human health and the environment. If you have a specific need for caustic wax, consider consulting with a chemical supplier or manufacturer to obtain it safely and in the appropriate form for your intended use.