Neoregelias are quite hardy, among the easiest of Bromeliads to grow, and generally form open rosettes that dramatically change colour in the centre or heart at flowering. As these colour changes are usually in the maroon, red range they create striking combinations with the green leaves. The flowers are quite small and just protrude above the reservoir of water retained in the centre of the plant often with the down folding of the petals creating a meniscus that keeps the water from reaching the centre of the flower. While they grow best in average to warm conditions, (13-30 degrees C, 55-85 degrees F), some of the stiffer leafed varieties will stand temperatures lower than freezing.