Like bromeliads, another epiphyte I mount without companions is the staghorn fern. I will mount two smallish stags together on a mount, simply so that can grow towards each other, producing a larger plant faster. Smaller mounts will have single plants though. I typically don't mount more than one orchid on a mount and as Elaine stated, I wouldn't mount Catt. with Phal. The main reason I stay with a single variety on a mount is because this is for sale, not for my pleasure. There is surely nothing wrong in having multiple orchids on a large mount, one variety or several varieties.
