Comment from Peter Tristram...
Plants from my European imports are often now in bloom though mice, grasshoppers and other pests have destroyed many blooms making them not worth photographing. I have built a new greenhouse primarily for my Tillandsia collection to help solve this problem. One plant that has survived the pests is T. tillii. I obtained this species many years ago from Alfedo Lau as a species related to T. laui, then undescribed, but it died after blooming like the lauis. No doubt Pam of Birdrock sold it as well. Like many other Mexican species finding specimens is difficult these days, unless grown from seed, though many also pup and the Europeans seem to do this method of propagation well. I also saw it in bloom at Lydia Köhres’s place growing in near full sun too. I hope it pups and/or sets seed!