I have a Peniocereus Greggii. I've had it for nearly a year. This Spring it put out three stems. You can view a pic of this cactus at http://members.cox.net/plumeriaz/peniocereus_greggii.jpg. It's currently planted in a 1-gal container. I believe that it's time to be transplanted. Unfortunately, I can't plant it in the ground. I was wondering if anyone can recommend a container size (width x depth) that i should use? I plan to use cactus soil from a local nursery and add in more pumice.
Thanks in advance,