|Imperialis is a stemless, epiphytic or rock-dwelling perennial producing rosettes of scaly, mid-green or purple leaves. 3 or 4 upright, tubular spikes of violet flowers with red floral bracts are borne in autumn. In general, Tillandsia is a large group of evergreen perennials that may be either epiphytic, terrestrial, or rock-dwelling and are a member of the bromeliad family. Their leaves are tough and linear often grey-green, dark green or shades of red. Flowers are usually funnel-shaped with 3 sepals and petals, with spreading terminal lobes and emerge from the center of showy bracts. These curious plants may be grown outdoors as long as temperatures do not drop below 45 degrees F. To grow Tillandsia, locate in a well ventilated place where there is full light and protection from hot sun. From mid spring through fall, mist daily and once a month, mist with 1/4 strength water soluble fertilizer. If grown outdoors, keep dry during winter.