Mature size & growth rate

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

Also called Canna Peace Lily, Broad-Leaved Peace Lily.

More about canna-leaved peace lily

About Canna-Leaved Peace Lily

Spathiphyllum cannifolium · also called Canna Peace Lily, Broad-Leaved Peace Lily · tropical

Spathiphyllum cannifolium is a robust tropical Araceae from South America and the Caribbean, named for its broad, canna-like leaves. It bears classic white peace lily spathes and adapts readily to indoor conditions with low to moderate light. Like all Spathiphyllum species, it is toxic to cats, dogs, and people due to calcium oxalate crystals.

Mature size: 60-100 cm tall indoors

Watch for — No blooms: Usually caused by insufficient light. Move to a brighter location with indirect light and ensure the plant is not over-fed with nitrogen, which promotes leafy growth at the expense of flowers.

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 indoors. 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: feed with a balanced liquid fertiliser at half strength once a month from spring to early autumn. a high-phosphorus formula can be used every 6-8 weeks to encourage flowers. do not fertilise in winter.

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 indoors 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.