Much sought by hobbyists, cacticola is a prize in any collection. A soft rosette of half inch wide gray leaves, produces a spectacular inflorescence of lavender branches with purple-edged white to yellow flowers. T. cacticola grows in the Tropical Thorn Forest of northern Peru and often is found growing on cacti, hence the name. Grow on the dry side, bright and airy. Likes fertilizer. Amazingly this plant is grown for cut flowers in parts of South America.