Cryptanthus have been crossed with Billbergia and the resulting hybrids are intermediate in habit between the two genera.
Bromeliad Plant Care Blog
The genus Quesnelia is very similar to Billbergia, forming somewhat stiff, upright rosettes and being just as easy to grow.
An excellent way to grow bromeliads in the greenhouse or conservatory is in a permanent bed specially designed for them.
Many other species of Aechmea are seen in collections and at shows, but being tempted to buy an unknown plant, you should find out its ultimate size; some may grow to 3 ft (90cm) or more in diameter and could become an embarrassment in a small greenhouse or home.
Once it is assembled and planted, water the whole tree thoroughly, using a can fitted with a fine rose, and allow it to drain. If intended for the home, the tree is best stood in a saucer or dish to avoid marking the shelf or table underneath it.
