Two days ago I repotted two of the oncidiums in 5" plastic pots with a very fine bark mix. Previously they were in 6" clay pots with medium size mix that I put them in 15 months ago. They surely do look happy now--never slowed down! One had really nice roots and the second one has the roots I expected. Not so good.
Bill, are there any other orchids that should be potted in plastic pots instead of clay pots? I have two Paphiopedilums that I downsized and repotted in plastic using that fine mix after looking at your thread about repotting Paphs.
I do appreciate all the help you give to people! You are a very valuable asset to this board.