Mature size & growth rate

How big does Canna-leaved Peace Lily (Spathiphyllum cannifolium) get?

Also called Canna-leaved Peace Lily, Cannifolium Peace Lily.

More about canna-leaved peace lily

About Canna-leaved Peace Lily

Spathiphyllum cannifolium · also called Canna-leaved Peace Lily, Cannifolium Peace Lily · houseplant

Spathiphyllum cannifolium is a tropical species from northern South America and the Caribbean, distinguished by broad, canna-like leaves and creamy-white spathes. Less common in cultivation than hybrid cultivars, it is a collector's species valued for its bold foliage and authentic species character. Care requirements mirror other peace lilies: consistent moisture and warmth.

Mature size: 60–100 cm tall and 50–80 cm wide

Watch for — Slow or no flowering: Species-type peace lilies can be reluctant bloomers indoors compared to cultivars bred for flower production. Ensure adequate indirect light, allow a slightly cooler resting period in autumn, and avoid high-nitrogen fertilisers that encourage vegetative growth at the expense of blooms.

Indoor size vs how big it gets in the wild

Canna-leaved Peace Lily 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 60–100 cm tall and 50–80 cm wide. 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

Canna-leaved Peace Lily is a moderate grower. Realistically, expect three to six years to reach mature indoor size, gaining a steady amount each growing season. Its feeding profile backs this up: apply a diluted balanced liquid fertiliser (half strength) once every three to four weeks during spring and summer. avoid high-potassium 'tomato' feeds, which can interfere with calcium uptake. do not feed from october through february.

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

How to keep canna-leaved peace lily smaller

You are not stuck with the maximum size. For canna-leaved peace lily specifically, these are the levers, in order of impact:

Divide the clump every year or two — splitting canna-leaved peace lily 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 canna-leaved peace lily 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 canna-leaved peace lily bigger or faster

If you want it to fill the space sooner, push the conditions rather than hoping — for canna-leaved peace lily 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 canna-leaved peace lily light requirements page covers exactly how bright a spot it needs to grow at its potential instead of stalling.

When canna-leaved peace lily outgrows the room (or the pot)

"Too big" usually arrives as one of these signs for canna-leaved peace lily:

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 canna-leaved peace lily repotting guide. If you want more of this plant instead of a bigger one, the canna-leaved peace lily propagation guide turns prunings into new plants.

Canna-leaved Peace Lily size — frequently asked questions

How big does canna-leaved peace lily get?

Canna-leaved Peace Lily reaches 60–100 cm tall and 50–80 cm wide 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 canna-leaved peace lily slow or fast growing?

Canna-leaved Peace Lily is a moderate grower. Expect three to six years to reach mature indoor size, gaining a steady amount each growing season. Canna-leaved Peace Lily 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 canna-leaved peace lily take to reach full size?

Roughly three to six years to reach mature indoor size, gaining a steady amount each growing season. Light, pot size and feeding move that timeline more than anything else.

How do I keep canna-leaved peace lily smaller?

Divide the clump every year or two — splitting canna-leaved peace lily 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 canna-leaved peace lily 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.