Guzmania houseplant care is easy, which adds to this plant’s popularity. Guzmanias require low light and should be kept out of direct sunlight. Place distilled or filtered water in the central cup of the plant and replace frequently to keep it from rotting. Keep the potting mix moist during the spring and the summer months. Guzmanias thrive in temperatures of at least 55 F. (13 C.) or higher. Because these are tropical plants, they benefit from high humidity. A light mist daily will keep your guzmania looking its best. Add a balanced fertilizer every two weeks during the spring and summer and a slow release fertilizer at the end of the summer.