A large proportion of Treborth’s living collection are housed in the 6 glasshouses, comprising 5 public display houses and 1 propagation house.

Three of the glasshouses on the original Thoday site in Bangor were moved up to Treborth in the early 1960s and are still standing as the present Tropical, Temperate and Orchid Houses. Now in their 7th decade they have served the university well.