Zamioculcas, the ZZ plant or “dollar tree”, suits people who forget to water: glossy leaves, a calm nature and the ability to go weeks without water. Yet too much care is what usually kills it. Here’s how to care for a ZZ plant at home, how often to water and feed it, how to repot it, why leaves turn yellow and how it flowers.
Overwatering is far more dangerous for a ZZ plant than drought
What a ZZ plant is
The ZZ plant comes from East Africa, where it grows on rocky soils and survives long droughts, storing water in a tuber-like rhizome and thick stalks.
What looks like a stem with leaflets is actually one large compound leaf.
Popular varieties: the classic green, compact Zenzi, near-black Raven and a variegated form.
The “dollar tree” name comes from the belief that it attracts money and prosperity.
ZZ plant care at home
Light: indirect, from bright to partial shade. Harsh midday sun can scorch it; in deep shade it stretches and grows slowly.
Watering: only when the soil is completely dry, roughly every 2–3 weeks in summer and monthly or less in winter.
Temperature: +18…+26 °C, not below +12…+15 °C in winter. Misting isn’t needed; just wipe dust off the leaves.
Feeding: monthly from April to September with half-strength succulent or cactus fertiliser; none in winter.
How to repot a ZZ plant
Repot in spring: young plants yearly, mature ones every 2–4 years when the rhizomes distort or crack the pot.
Choose a slightly larger, heavy, stable pot, as mature plants tend to tip over.
Use cactus and succulent mix with perlite and drainage; transfer the root ball whole without burying the tubers deeper.
The sap irritates skin, so wear gloves.
Why a ZZ plant turns yellow
Overwatering is the commonest cause: lower leaves yellow and stems soften. Check the roots and tubers, cut away rot, dust with charcoal and repot in dry soil.
Natural ageing: if one old leaf yellows while new ones grow, there’s no need to worry.
Cold and draughts, especially after watering in winter.
Sunburn: yellow-brown patches on leaves in direct sun.
How a ZZ plant flowers
ZZ plants flower rarely and only when mature: a short cream spadix in a greenish spathe appears at the base, like a peace lily flower but hidden among the leaves.
Flowering doesn’t affect the plant’s health and is more likely with bright indirect light and correct watering.
Propagating a ZZ plant
Dividing the plant when repotting is the quickest way.
From a single leaflet: let the cut dry for a day, set it in damp sand or mix; a tuber forms over a few months, and the first leaf may take six months or more.
Is the ZZ plant toxic?
Like other aroids, it contains calcium oxalate; the sap irritates skin and mucous membranes, so keep it away from cats, dogs and small children.
Graduated from Taras Shevchenko National University of Kyiv, Institute of Biology and Medicine (2001). BSc in Biology, MSc in Horticulture. Writes about plants, works at a garden centre selecting and repotting plants, and contributes to plant reference guides.
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