ZZ Plant Care: Watering, Light and Rhizomes
The ZZ plant is the houseplant for people who forget to water. It stores water in thick rhizomes, sheds dust from glossy leaves and handles low light. The one mistake to avoid is treating it like a thirsty plant, because almost every ZZ that dies has been overwatered.
Light
Bright, indirect light gives faster growth, but it handles medium and low light well. Strong afternoon sun through glass can scorch the leaves, so keep it a few feet back.
Water
Water about every one to two weeks in the growing season, and less in winter. Water only when the soil is completely dry, then empty the saucer.
Soil and pot
A gritty, well-draining mix such as cactus mix, or potting mix with perlite or pumice. Choose a snug pot with a drainage hole, only a little wider than the rhizome cluster.
Temperature and feeding
Normal home temperatures between about 60 and 80°F. Feed once or twice a month in spring and summer at a diluted strength. No feeding in fall and winter.
Why is my ZZ turning yellow?
A single yellow lower leaf is often just age. Several yellow leaves, especially with soft stems, usually mean the soil stayed wet and the rhizomes are rotting. Pull the plant, cut away soft tissue, let it dry for a few days, and repot in drier mix. Shriveled leaves, by contrast, mean the plant needs a drink.
Propagation
Division is the quickest route. Separate the stems that have their own rhizomes and pot each one. Leaf cuttings also work, but they take several months and need patience.
Common problems
Overwatering. Check the rhizomes and repot drier.
Underwatering. Give a thorough drink.
Direct afternoon sun through glass.
ZZ plants at Palma
We grow ZZ Zamioculcas 'Black Queen', with deep, glossy leaves, and 'Chameleon', whose leaves show a shifting green and bronze pattern. The care is the same across both.
