Hi guys, today I finished making containers for my dragonfruit. A total of 6 containers. I decided to economy and plant two different varieties in one container. Someone tell me which land is better to use? I have a good humus from chicken manure, is it possible for pitahaya?
Are you planning on moving the plants around once they are bigger? If not, and you decide to plant more, one suggestion I would make is to use your current design but make the post a full 8 feet long. cut a hole in the bottom of the pot and run the post straight into the ground. Or, more specifically, set posts into the ground, deep enough so they wont shift or lean, and then put a container, with a hole in the bottom, over the post and then build your support arms on top as normal. These plants can get very top heavy so you need to make sure they cant lean or topple over.
Also, if you are going to wrap the wood posts in plastic, I would suggest wrapping a second layer of garden burlap (potato sacks) around the post and either tying or stapling them in place. The burlap will help with the main stalk attaching to the post and also in the formation of the natural "air roots" these plants normally use to cling to trees and other surfaces as they grow, which aids in watering when the burlap is wetted.
And to answer the other posters question a bit more, dragon fruit are container grown, typically, to micromanage the plants water consumption, fertilizer intake and risk to harm from outside forces like gophers, flooding and soil bacteria.