Does anyone have any tips for keeping tall dendrobiums upright when repotting? I've got 2 that have canes 3-4 feet in height and they are in need of splitting. They currently lean way over and I've resorted to tying it to the legs of the orchid benches to keep them up.
My current potting mix consists of fir bark, sponge rock, and black cinders. Is there anything else I can use to help these giants stay up?
