The Caladium Mount Everest, 'Caladium Mount Everest', has a unique leaf. If you turn this Caladium's leaf so that it points upward, you'll see how it got its name. The acute tip resembles the snow-capped peaks of legendary Mount Everest. Despite its frosty name, 'Everest' needs hot humid temperatures to thrive and must be protected from direct sun rays throughout the day. It is hardy in zones 4-9.