Mature size & growth rate

How big does Raven ZZ Plant (Zamioculcas zamiifolia 'Raven') get?

Also called Raven ZZ Plant, Black ZZ Plant, Zanzibar Gem Raven.

More about raven zz plant

About Raven ZZ Plant

Zamioculcas zamiifolia 'Raven' · also called Raven ZZ Plant, Black ZZ Plant · houseplant

A striking cultivar of the classic ZZ plant whose new leaves emerge bright lime-green then gradually deepen to near-black as they mature, creating a dramatic two-tone effect. Exceptionally drought-tolerant thanks to water-storing rhizomes, it thrives in low light and suits almost any indoor environment. Slow-growing but nearly indestructible.

Mature size: 45–90 cm tall (18–36 in), spread of 45–75 cm (18–30 in)

Watch for — Slow colour darkening: New leaves emerge green and take several weeks to mature to near-black — this is normal for the Raven cultivar. Ensure the plant receives adequate indirect light, as very low light can slow the darkening process.

Indoor size vs how big it gets in the wild

Raven ZZ Plant stays fairly low but widens over time — it spreads into a bigger clump by offsets, runners or rhizomes rather than shooting upward. Indoors and in a pot, expect 45–90 cm tall (18–36 in), spread of 45–75 cm (18–30 in). A pot, your light levels and a little pruning are what set the final size in a home, far more than the plant's theoretical potential.

Size here is about width, not height: the plant builds an ever-wider clump or sends out plantlets and runners while staying relatively short.

Growth rate and years to mature

Raven ZZ Plant is a slow grower. Realistically, expect many years — it gains very little each season, so it can hold the same shelf-sized footprint for 5-10+ years. Its feeding profile backs this up: feed with a balanced liquid fertiliser diluted to half strength once a month during spring and summer only. overfeeding causes leggy, weak growth. no feeding required in autumn and winter.

Want this turned into the right next pot at the right moment? The pot size calculator and the raven zz plant repotting guide cover when and how much to size up — pot size is one of the biggest levers on how fast raven zz plant grows.

How to keep raven zz plant smaller

You are not stuck with the maximum size. For raven zz plant specifically, these are the levers, in order of impact:

Divide the clump every year or two — splitting raven zz plant is the main way to control its spread and refresh it.
Remove runners, plantlets or offsets as they appear if you want it to stay a single tight clump.
Keep it slightly pot-bound; a snug pot naturally limits how wide the clump can get.

The keep-it-smaller method, step by step

Lift the whole plant. Slide raven zz plant out of its pot in spring when the clump has filled it.
Split the clump. Tease or cut the rootball into two or more sections, each with healthy roots and growth.
Repot one division. Put a single division back in the original pot to reset it to a smaller size; pot or give away the rest.
Remove offsets as they form. Through the year, detach new runners or pups to stop it spreading again.

How to grow raven zz plant bigger or faster

If you want it to fill the space sooner, push the conditions rather than hoping — for raven zz plant the accelerators are:

Give it a wider pot and let the clump fill it — width is exactly how this plant gets bigger.
Brighter light speeds up clump and offset production noticeably.
Leave plantlets and offsets attached and feed through the growing season for the fastest spread.

Light is almost always the ceiling. The raven zz plant light requirements page covers exactly how bright a spot it needs to grow at its potential instead of stalling.

When raven zz plant outgrows the room (or the pot)

"Too big" usually arrives as one of these signs for raven zz plant:

The clump bulging over the pot rim or splitting the pot — the cue to divide, not to find a bigger room.
A dense centre that goes bare or tired while the edges keep spreading.
Runners or offsets escaping across the shelf or into neighbouring pots.

If it is the pot rather than the room, it is a repotting job, not a goodbye — see the raven zz plant repotting guide. If you want more of this plant instead of a bigger one, the raven zz plant propagation guide turns prunings into new plants.

Raven ZZ Plant size — frequently asked questions

How big does raven zz plant get?

Raven ZZ Plant reaches 45–90 cm tall (18–36 in), spread of 45–75 cm (18–30 in) when grown indoors. Size here is about width, not height: the plant builds an ever-wider clump or sends out plantlets and runners while staying relatively short.

Is raven zz plant slow or fast growing?

Raven ZZ Plant is a slow grower. Expect many years — it gains very little each season, so it can hold the same shelf-sized footprint for 5-10+ years. Raven ZZ Plant stays fairly low but widens over time — it spreads into a bigger clump by offsets, runners or rhizomes rather than shooting upward.

How long does raven zz plant take to reach full size?

Roughly many years — it gains very little each season, so it can hold the same shelf-sized footprint for 5-10+ years. Light, pot size and feeding move that timeline more than anything else.

How do I keep raven zz plant smaller?

Divide the clump every year or two — splitting raven zz plant is the main way to control its spread and refresh it. Remove runners, plantlets or offsets as they appear if you want it to stay a single tight clump. Keep it slightly pot-bound; a snug pot naturally limits how wide the clump can get.

How can I make raven zz plant grow bigger or faster?

Give it a wider pot and let the clump fill it — width is exactly how this plant gets bigger. Brighter light speeds up clump and offset production noticeably. Leave plantlets and offsets attached and feed through the growing season for the fastest spread.