See there are aerial roots like the Banyan tree which it sends down to the soil. Then there are certain clinging roots that I have noticed on philodendron, they cling very tight. If you have a Monstera growing in the soil, it also if it against the walls starts clinging and slowly its connection with the soil is cut. Now Tee might be correct and wrong at the same time. While these are not native to this area except for figs the conditions are nearly identical except for winter. Tee this cactus native habitat is down South and West towards Africa. Cactus as it is can make do with the moisture in the air, dew plus what ever rain that falls on it. So it does not have to compete with figs or philodendrons in the root department.
Adventitious or superfluous. Tee
since when did nature become superfluous?
No need to argue, I just found the source and got one because they were not blooming and the nursery owner did not want to give several of same colour so he asked me back in Feb when they bloom here. Let me study it behavior as a hanging plant and when I have enough material I will take cuttings and place them against walls. Lets see what happens or one of you could take a piece of two inch diameter PVC pipe cover it with long coconut coir, tie the coir in place then place the pipe piece amongst your cactus for it to cling to damp coir and lets see if it clings and climbs. Just an idea, how you use it is up to you.
Regards,
Arif.
