The fastest way to obtain a clump: buy it

"Tillandsia ionantha clump"

"Tillandsia ionantha clump"

"Tillandsia ionantha clump"

"Tillandsia ionantha clump"

at least 5 clump plants bloomed May 2020. Many more bloomed in June 2020. I used pollen from these to pollinate my caput medusae that was in bloom at this time, and a brachycaulos.