6" Neoregelia BromeliadLight: These plants thrive in indirect light or moderate shade. They can be acclimated to higher light levels. Water: Keep water in the central cup. Change the water frequently with clean water to prevent odor and bacteria. Temperature: These plants are somewhat more cold hardy than many tropicals, but they prefer 55 F or higher. They can survive to 40 F if you have taken them outside for the summer and there's a cold dip in nighttime temperatures,