Commissioned for the Royal Botanic Garden Sydney 200th Bicentenary celebrations, The Calyx, a new world-class center for horticulture, science and education, houses the largest living interior green wall in the Southern Hemisphere. Constructed by TPR GROUP, a distributor of GSky Plant Systems Inc, the largest green wall developer in North America, the GSky Versa Wall™ measures a staggering 51 meters long by 6 meters high and comprises more than 18,000 plants, five independent irrigation systems with 5 independent stations per system, over 300 meters of irrigation line, and more than 2,000 irrigation drippers.