Selection of 3 Mixed live Bromeliad PlantsTerrestrial bromeliads planted in potting soil are best used in terrariums that are not entirely enclosed. Air circulation is needed to prevent the plants from rotting. Instead of an open terrarium you can also attach a fan to an aquarium lid to ensure the soil will not remain constantly soaking wet.Watering and FeedingSpecies with a rosette of leaves should be watered by topping up the cupped rosette or ‘well’ with rain water. Empty and refill it every one to two months. Compost should be kept damp in summer and water only when it dries out in winterNon-rosette species such as Aechmea and Tillandsia should be kept moist at all times but never wet and good drainage is essentialMaintain humid conditions, particularly in summer, by placing the plant on a large saucer three-quarters filled with gravel or clay pellets and keep the level of water just below the surface of the gravel. Mist the plant in hot weatherNutrients are most readily absorbed through the leaves so mist non rosette plants with high nitrogen foliar feed at monthly intervals from spring to autumnRosette plants can have half-strength, general-purpose liquid feed that contains a high proportion of nitrogen,  added to the rainwater in the well, during the growing season