Semihydroponic and orchiata bark for large Bulbophyllum.
I have a number of large Bulbos and they are happily growing in moss. I replace the moss on a yearly basis and ti is both bothersome and expensive. I'm now going to try to grow them in a semihydroponic situation along with orchiata bark. The purpose of the moss is to keep the moisture loving plants constantly wt. I'll have to do that now by watering them daily. The advantage to me is that I should not have to change anything for at least 5 years, if the Orchiata is as good as they say it is.
Plants with that much water usually only develop shallow root systems, no need for more so I'll be using shallow trays. Since I don't plant to change anything for 5 years, they are over potted.
This is the shallow 14" tray I'm using for the smaller plants. It has no bottom drainage, 2 holes are drilled 1" off the floor and there is a layer of hygroton up to and just covering the holes. Then there is a layer of Orchiata bark mix. 2 parts medium, 1 part small, 1 part coconut choir, 2 parts medium lava rock is the mix.
Here is an empty tray.