How to Care for a ZZ Plant
Glossy, nearly indestructible, and happy in a dim corner. The only real way to hurt a ZZ plant is to water it too often.
ZZ Plant at a Glance
Everything you need to know, in four numbers.
Complete ZZ Plant Care
The ZZ plant (Zamioculcas zamiifolia) stores water in thick underground rhizomes, which is why it tolerates neglect so well. This guide is based on care research from university extension services, with sources linked at the end.
The same soil-first rule used for succulents applies here: check below the surface before watering. Our seasonal watering guide explains why light, pot material, and temperature matter more than a calendar reminder.
Light
NC State Extension notes a ZZ plant will grow in very low light, even rooms lit only by fluorescent light, making it one of the most tolerant houseplants available. Clemson Extension adds that bright indirect light speeds up growth, while direct sun causes scalding and browning.
Watering
Water routinely but let the soil dry out completely first. NC State Extension is direct that wet feet are not tolerated. Clemson Extension recommends roughly twice a month in summer and once a month in winter, only after the potting medium has fully dried.
Humidity
Clemson Extension notes a ZZ plant thrives at regular indoor humidity levels and needs no special adjustment. Its thick, fleshy rhizomes store water underground, which is exactly what makes it so drought tolerant above ground.
Fertilizing
Feed sparingly: NC State Extension and Clemson Extension both recommend a balanced liquid fertilizer just once or twice during the growing season. This is a slow grower even in ideal conditions, and it doesn't need heavy feeding to stay healthy.
Soil & Potting
Use well-drained potting soil, the same kind you'd use for a cactus or succulent, per NC State Extension. Good drainage matters more than soil richness here, since the bulbous rhizomes already store what the plant needs.
Temperature
Keep it above 60°F, per Clemson Extension. If it spends summer outdoors, bring it in once temperatures approach that mark. Otherwise, typical indoor temperatures suit it fine year-round.
How to Propagate a ZZ Plant
Slower than a pothos cutting, but just as doable. Division and leaf cuttings both work.
1. Division (fastest)
At repotting time, separate a section of the underground rhizome that already has roots and leaves attached, per NC State Extension, and pot it on its own. This gives you an established plant immediately instead of waiting for new growth.
2. Leaf cutting (slower)
NC State Extension also lists leaf cutting as a valid method. Remove a healthy leaflet and place the base in soil or water. It works, but a ZZ plant forms a new rhizome and roots far more slowly than fast-rooting vines, so treat this as a patience project, not a quick win.
3. Be patient either way
This is a naturally slow-growing plant even from a mature start. Don't judge a cutting as failed just because you don't see visible progress within the first few weeks.
ZZ Plant Stress Signals
ZZ plants rarely complain. Here's what it means when they do. For leaf spots or symptoms that do not fit these patterns, use the plant disease identifier with a clear photo.
Yellow, mushy leaves or a soft base
Cause: Overwatering and root rot, the one real vulnerability of an otherwise tough plant.
Fix: Stop watering, let the soil dry out completely, and check the rhizomes. If they're soft or mushy, trim the affected sections and repot in fresh, well-drained soil.
Black spots on the stems
Cause: Normal for this species, per Clemson Extension, not a sign of disease.
Fix: No action needed. Only worry if black spots come with yellowing or mushy leaves, which points to root rot instead.
Scalded or browned leaves
Cause: Direct sunlight, which this low-light-adapted plant isn't built to handle.
Fix: Move it out of direct sun and into bright indirect light or even a low-light spot. Damaged leaves won't recover, but new growth will be fine.
Track your ZZ plant in Olmi.
Set a watering reminder, log every leaf or rhizome you propagate, and get alerts before your ZZ plant dries out too long. Olmi keeps your schedule consistent, without the guesswork.
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ZZ Plant Care FAQ
How often should I water a ZZ plant?
Let the soil dry out completely between waterings. Clemson Extension recommends watering only once or twice a month, and NC State Extension is direct about it: this plant does not tolerate wet feet. In winter, when growth slows, once a month is often plenty.
Can a ZZ plant survive in low light?
Yes, better than almost any other common houseplant. NC State Extension notes it will grow in very low levels of light, even areas lit only by fluorescent light. Clemson Extension adds that bright indirect light speeds up its naturally slow growth rate, but low light won't kill it, it'll just grow more slowly.
Is a ZZ plant toxic to cats and dogs?
Yes. NC State Extension lists it as having medium toxicity to cats and dogs, caused by calcium oxalate crystals in the leaves, which can cause vomiting and diarrhea if a pet eats a significant amount. Clemson Extension lists it plainly as not pet safe. Keep it out of reach of pets that chew on houseplants.
How do I propagate a ZZ plant?
NC State Extension lists division or leaf cutting as the two methods. Division at repotting time is the faster, more reliable option: separate a section of the underground rhizome with roots and leaves attached, and pot it on its own. Leaf cuttings work too, but a ZZ plant grows a new rhizome and roots much more slowly than fast-rooting vines like pothos, so patience is part of the process.
Why does my ZZ plant have black spots on the stems?
Clemson Extension notes that black spots on the stems are normal for this plant and not a sign of disease. If you're also seeing yellow, mushy leaves or a soft base, that combination points to overwatering and root rot instead, which is the plant's one real vulnerability.
Why is my ZZ plant growing so slowly?
That's normal. NC State Extension describes this as a slow-growing plant even under good conditions, reaching 2 to 4 feet over time. Clemson Extension notes brighter indirect light will speed things up somewhat, but don't expect the fast growth you'd see from a vining plant like pothos.
How often should I fertilize a ZZ plant?
Lightly. Both NC State Extension and Clemson Extension recommend feeding just once or twice a year with a balanced liquid fertilizer, timed to the growing season. This is a slow, low-maintenance grower, and overfeeding does more harm than skipping a feeding.
What's the difference between a regular ZZ plant and a Raven ZZ plant?
Raven ZZ (sold as Zamioculcas zamiifolia Raven, 'Dowon') is a cultivar with dramatic dark purple-to-black foliage, documented in the NC State Extension Plant Toolbox alongside the standard green form. Care is identical for both; the difference is purely cosmetic, and new Raven leaves often emerge green before darkening as they mature.
Sources
The care information on this page is based on the following university extension services, not opinion: