An Emerald Gem plant or Homalomena, native to tropical Asia and South America, is an upright plant with dark green, waxy, spade-shaped leaves. Since these plants are usually about 12″-30″ tall, it makes them ideal for areas with height restrictions. Although an Emerald Gem plant is a relative of the easy-care philodendron, it is a bit more finicky and requires more attention. They like to have their soil kept moist but never soggy.