I've seen Disas occasionally in the displays at orchid shows I attend. Loved them at first sight. However they are too "needy" for me to try. (Macodes is enough of a "diva" as it is.) In talking to a few folks who grow them, my understanding is that if you can provide for all their needs they grow effortlessly. But if something goes amiss, they 'crash and burn' in a heartbeat.