I can see this being a very good scaffold to develop a strangler ficus on IF you can get the roots developed and beefed up enough to support the tree by the time the cholla rots away. I found some very cool pieces on eBay. If cholla is a yard weed there any chances you could send some for “educational purposes”I had to look up more on strangler fig to get a better idea where you're going with this.
I'm still not sure.
Are you thinking planting a seedling in the top and letting the roots grow down? Multiple pieces of cholla like a tripod almost?
Are you anticipating the cholla wood rotting away or being removed at some point? It won't last long being watered all the time, especially in Florida humidity.
How the hell do you even know what cholla is in Florida? Here it's yard weed.
The concept may have merit, just no experience with strangler fig so lots of questions.
Completely disintegrates in about a year in water.Not sure how long cholla skeleton will last. It's not really "wood" because it is the interior skeleton of a desert succulent. It is popularly used in aquariums where submerged it lasts 6 - 18 months. I have no idea how long it would last when in contact with wet soil...
My thought is the portion in the soil may break down faster actually as it's a perfect environment for the microbes that would speed decomposition.I have no idea how long it would last when in contact with wet soil