Welcome,
@Atabby. Tillandsia are indeed an interesting family of plants, and though they are generally thought of as (the) "air-plants", all the epiphytic plants (such as orchids, staghorn ferns, and bromeliads) are also "air-plants". At one time I had a lot of hybrids (some man-made, some from far-off places). Last year I began to collect only those tillandsia native to the USA, mostly a few counties in Florida. I now have eight of those varieties. I decided to mount all of the varieties on a single mount so that one could see the diversification of the native plants and chose a huge slab of natural cork to mount them on. The only native variety that I have collected that is not on the cork is Spanish moss. Two of the varieties are now coming into bloom.
