ZZ Plant Care: The Nearly Unkillable Beginner Plant

The ZZ plant is about as close to unkillable as a houseplant gets. It grows happily in low light, stores its own water underground, and forgives you for forgetting it exists for weeks at a time. If you have talked yourself out of owning plants because you keep killing them, this is the one to start with.

Zamioculcas zamiifolia, to give it its full name, picked up the nickname ZZ because nobody wants to say that twice. Good ZZ plant care really comes down to one habit: watering it far less than you think. Get that right and the rest is easy. This guide covers light, water, soil, feeding, repotting, propagation, and the handful of problems that ever come up.

ZZ plant care at a glance

Light

ZZ plants handle low light better than almost anything else you can put on a shelf. They stay glossy in a dim office, a north-facing room, or a windowless hallway, which is why they turn up in so many lobbies and waiting rooms.

But tolerating low light and thriving in it are not the same thing. Your ZZ grows faster and holds a richer green in bright indirect light. A spot a few feet back from a window is close to perfect.

The one thing to avoid is harsh direct sun, which can scorch the leaves. If you want more plants that shrug off a dark corner, our list of the best indoor plants for beginners is full of them.

Watering

This is the whole game, so read it twice. Overwatering kills more ZZ plants than every other cause combined.

Under the soil, a ZZ grows fat, potato-like rhizomes that store water. That is its secret: the plant would far rather be too dry than too wet. Water it about every 2 to 3 weeks in spring and summer, and once a month or less in winter when growth slows down.

Those numbers are a starting point, not a schedule. Always check the soil first: push a finger a couple of inches in, and if you feel any moisture, wait a few more days. Let the pot dry out completely between drinks. The line that saves the most ZZ plants: when in doubt, don’t water.

When you do water, soak the soil until it runs out the drainage holes, then tip out whatever collects in the saucer. Standing water is what rots the rhizomes. The first sign of overwatering is yellowing leaves, so if you see yellow, put the watering can down. For a framework you can use on every plant, read how often to water houseplants.

Soil and pot

ZZ plants need soil that drains fast, meaning water runs straight through instead of sitting around the rhizomes. A regular houseplant mix works if you loosen it with a handful of perlite or coarse sand so it never stays soggy. A cactus or succulent mix straight off the shelf is a safe shortcut.

The pot matters just as much. It has to have a drainage hole, no exceptions. A pretty pot with no hole is root rot waiting to happen. If you love a cover pot, plant the ZZ in a plastic nursery pot with holes and drop that inside.

Terracotta is a smart choice if you tend to overwater: it is porous, so it pulls moisture out through its walls and the soil dries faster. Plastic and glazed ceramic hold water longer, fine if you have a light hand.

Humidity and temperature

Good news, this part takes zero effort. ZZ plants are perfectly happy in the normal, slightly dry air of most homes. No misting, no pebble trays, no humidifier. They come from eastern Africa and handle dry spells easily.

Temperature is just as relaxed. Anywhere from 65 to 85°F (18 to 29°C) suits them. The thing to avoid is cold: keep your ZZ above about 45°F and away from icy drafts and unheated porches.

Fertilizer

ZZ plants are light eaters and will coast for a long time on almost nothing. Feeding is a nice-to-have, not a rule.

If you want to nudge more growth, feed once a month in spring and summer with a balanced houseplant fertilizer diluted to half strength. Skip it in fall and winter while the plant rests. Too much does more harm than too little, so stay stingy.

Repotting

ZZ plants are slow growers and don’t mind being a little snug, so you will not be repotting often. Once every 2 to 3 years is plenty for most.

You will know it is time when roots crowd the surface, the plant dries out much faster than it used to, or the pot starts to bulge and crack. Those rhizomes are strong enough to split a plastic or thin terracotta pot as they fill out, which is your clear signal to size up.

Repot in spring, moving up just one pot size. Too big a jump surrounds the rhizomes with wet, unused soil, which brings you right back to the rot problem. Fresh, well-draining mix and a pot with drainage, done.

Propagation

Making more ZZ plants is easy, but it asks for patience. There are two ways to do it.

Division is the fastest and most reliable. When you repot, slide the plant out and gently tease the clump of rhizomes into two or more sections, each with its own roots and a stem or two. Pot each piece on its own, and you have a full-sized ZZ right away.

Leaf cuttings are slower but almost free. Pluck a healthy leaflet, let the cut end dry for a few hours, then stand it in water or push it into moist soil. The catch is patience: a leaf can take several months, sometimes the better part of a year, to grow a tiny rhizome and its first shoot. It works if you forget about it and let it do its thing.

Common problems

ZZ plants rarely get sick, and when they do, water is almost always behind it. Here are the three things that send people searching at 11pm.

Yellow leaves. Yellowing is the classic sign of overwatering. The rhizomes are holding too much water, and the leaves respond by going soft and yellow, usually starting low on the stem. Let the soil dry out completely, check that the pot actually drains, and ease off your watering. Our guide to ZZ plant yellow leaves walks through every cause and fix.

Mushy stems or a soft base. This is root rot, the serious one. Stems that feel squishy at soil level or pull away easily mean the rhizomes are rotting in wet soil. Unpot the plant, cut away every soft brown rhizome and mushy root, and repot the firm parts in fresh dry mix. Our guide to root rot in houseplants covers how to catch it early and save the plant. If gnats are buzzing around the damp soil, here is how to get rid of fungus gnats.

Leggy, floppy growth. If new stems stretch out tall and thin and lean toward the window, your ZZ wants more light. It is surviving the dim corner but not thriving. Move it somewhere brighter, out of direct sun, and new growth will come in sturdier.

Is the ZZ plant toxic?

Yes. The ASPCA lists the ZZ plant as toxic to both cats and dogs. Every part of the plant contains insoluble calcium oxalate crystals, tiny needle-like structures that cause an immediate burning irritation when an animal bites into a leaf or stem.

The reassuring part is that it is mildly toxic, not deadly. A pet that takes a chew usually gets sore, drooly, and off its food for a bit, sometimes with vomiting. The crystals can irritate human skin and eyes too, so wash your hands after pruning or repotting. Keep your ZZ up on a shelf or somewhere your pets don’t roam, and call your vet if one takes a bite.

Frequently asked questions

How often should I water a ZZ plant?

About every 2 to 3 weeks in spring and summer, and once a month or less in winter. Treat that as a guide, not a rule. Check the soil first and only water when it has dried out completely a couple of inches down. When you genuinely can’t tell, wait a few more days.

Can a ZZ plant live in low light?

Yes. ZZ plants tolerate low light better than almost any houseplant, which is why they thrive in dim offices and windowless rooms. For faster growth and richer color, give them bright indirect light when you can, and keep them out of harsh direct sun.

Why are my ZZ plant leaves turning yellow?

Overwatering, nearly every time. The rhizomes store water, so soggy soil quickly leaves them waterlogged and the leaves go yellow and soft. Let the soil dry out fully, make sure the pot drains, and water less often. Our ZZ plant yellow leaves guide covers the rarer causes too.

Is the ZZ plant toxic to cats and dogs?

Yes. The ASPCA lists it as toxic to cats and dogs because of the calcium oxalate crystals in its leaves and stems. A pet that chews it can drool, retch, and get an upset stomach. It is usually mild rather than dangerous, but keep the plant out of reach and call your vet if your animal takes a bite.

How fast does a ZZ plant grow?

Slowly, and that is normal. Expect a few inches of new growth per month in spring and summer and almost nothing over winter. A mature ZZ tops out around 2 to 3 feet tall and wide. Brighter light speeds things up a little, but this is not a plant that fills a room in a season.

What is a Raven ZZ plant?

The Raven ZZ is a striking cultivar whose leaves emerge bright green and darken to a glossy near-black over about four to six weeks. Care is identical to the classic ZZ: low to bright indirect light, water only when the soil is fully dry, and the same drainage. The dark color deepens best in decent light rather than a dark corner.

The takeaway

If you remember one thing: with a ZZ plant, underwater rather than over. Give it a bright-ish spot out of direct sun, let the soil dry completely between drinks, and it will look sharp for years while asking for almost nothing.

Ready for your next easy win? The snake plant is just as forgiving, and our roundup of the best indoor plants for beginners will help you build a collection that is genuinely hard to kill.

Sources and further reading: ASPCA Toxic and Non-Toxic Plants database (ZZ plant, Zamioculcas zamiifolia); North Carolina State Extension Gardener Plant Toolbox (Zamioculcas zamiifolia and Raven ZZ ‘Dowon’); Missouri Botanical Garden plant finder (Zamioculcas zamiifolia).