25 (35)cm, a much sought after form (sometimes called 'Alba') with a slightly more compact overall habit in comparison to the black flowering form and a pale yellowish-green large spathe with a long, protruding yellowish spadix. For any humus rich, very well drained soil with some good winter protection. In colder regions preferably grow in pots under frostfree conditions in a sunny spot throughout the year. During dormancy in winter keep plants almost completely dry at some 10°C. USDA Climate Zone 9. IV-V.