Zamioculcas Zamiifolia (ZZ Plant)
The Aroid family has given us more dependable house plants than any other group and Zamioculcas zamiifolia is no exception. This is the only species in the Zamioculcas genus, and worth adding to your collection.
ZZ makes a great room accent and practically thrives on neglect. This easy-going houseplant is forgiving if you forget to water, tolerates low light, and rarely needs fertilized.
Origin: East Africa
Height: Slow-growing, but can reach up to 3 ft (90 cm) indoors, confined to a pot. It grows much taller in its native habitat.
Light: You'll get the best growth and healthiest plant by keeping it in bright, indirect sunlight, though it will tolerate low light. Morning sun is fine, but keep it out of hot, direct sunlight which can scorch its leaves.
Water: Water thoroughly then allow the top 2 in (5 cm) of soil to dry out between waterings. Soggy soil will cause the rhizomes to rot. Yellow foliage and soft stems are also a sign of too much water. Although ZZ plant will tolerate dry soil, it will likely drop its leaves if left too dry, too long.
Humidity: Average indoor (around 40% relative humidity). If air is extremely dry, use a cool-mist room humidifier.
Temperature: Average room temperatures 65-75°F/18-24°C year-round.
Soil: Fast-draining medium works best to avoid root rot. Mix 1 part good-quality all-purpose potting mix and 1 part horticultural sand or perlite. Cactus potting mix works well, too.
Fertilizer: Feed 4 times a year with a balanced water-soluble fertilizer, diluted by half. It's a good idea to feed at the time of watering to avoid fertilizer burn.
Propagation: Division of rhizomes. Leaf cuttings can be propagated. Just pull a leaf off the stem and stick the cut end in moist potting medium. Don't bury the leaf too deep or it will rot. Be patient -- the cuttings can take several months to take root and grow. New plantlets will grow around the leaf.