Billbergia is one of my favourite bromeliads and find that they are generally very fuss free. Whilst outdoor planting should be fine in a sheltered position I personally keep mine in pots to transfer either inside or in a greenhouse/ polytunnel for winter storage. I always eagerly await the flowering period when the bright pink bracts really shine against the grey-green foliage. I have a rather large mother plant that is desperate for division so more of these will be available.