Mature size & growth rate

How big does Cordyline australis (Cordyline australis) get?

Also called cabbage tree, New Zealand cabbage palm.

More about cordyline australis

About Cordyline australis

Cordyline australis · also called cabbage tree, New Zealand cabbage palm · tropical

Cordyline australis, the New Zealand cabbage tree, is a palm-like evergreen with a fountain of narrow, sword-shaped leaves atop a slender trunk. Hardier than tropical ti plants, it tolerates cool, breezy conditions and even light frost once established. It enjoys full sun to bright light, free-draining soil and moderate water, making a striking architectural patio or border specimen.

Mature size: Outdoors reaches 3-10 m tall over many years; in containers and indoors typically kept to 1-2 m.

Indoor size vs how big it gets in the wild

Cordyline australis is a tree at heart. Indoors a pot and your ceiling keep it to in containers and indoors typically kept to 1-2 m., but in the ground it is a different scale of plant entirely (outdoors reaches 3-10 m tall over many years). Indoors and in a pot, expect in containers and indoors typically kept to 1-2 m.. In the ground with no restriction it is a completely different plant — outdoors reaches 3-10 m tall over many years — which is why the pot, the light and the pruning matter so much for the size you actually end up with.

It gains real height on a trunk or main stem, adding a tier of leaves a year and eventually reaching for the ceiling — this is a plant you grow up, not out.

Growth rate and years to mature

Cordyline australis is a slow grower. Realistically, expect a decade or more — slow growers like this add only a few centimetres a year, so expect 8-15+ years to reach their indoor ceiling. Its feeding profile backs this up: a light feeder. apply a balanced general-purpose fertiliser once or twice in spring and early summer, or a slow-release granular feed at the start of the season. avoid overfeeding, which produces weak, floppy growth.

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

How to keep cordyline australis smaller

You are not stuck with the maximum size. For cordyline australis specifically, these are the levers, in order of impact:

The decisive tool is the secateurs: cordyline australis can be topped (cut the main growing tip) to cap its height and force a bushier, shorter shape.
Keeping it deliberately pot-bound in a snug container slows the whole plant and limits ultimate size.
Prune in spring so it heals fast; remove the tallest leader back to a node to reset the height.
Good news: slow growth means topping it once buys you years before it needs doing again.

The keep-it-smaller method, step by step

Pick the new height. Decide how tall you want cordyline australis and find a leaf node or branch point just below that.
Top the main stem. Cut the main growing tip cleanly just above that node in spring; this permanently caps the height and forces side branches.
Keep the pot snug. Avoid jumping to a much bigger pot — a slightly restricted rootball keeps the whole plant smaller.
Maintain the shape. Prune back the tallest new leaders each spring to hold it at the height you chose.

How to grow cordyline australis bigger or faster

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

It already wants the bright light it needs; warmth, a yearly pot-up and spring-summer feed are the accelerators.
Pot up a size every year or two while young; restricted roots are the main thing holding height back.
Feed regularly through the growing season and keep it warm — height comes from sustained good conditions.

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

When cordyline australis outgrows the room (or the pot)

"Too big" usually arrives as one of these signs for cordyline australis:

The top leaves pressing against or bent by the ceiling — the classic "this is now too tall indoors" sign.
It has to be moved away from a light source it has literally outgrown.
Roots filling the largest pot you can reasonably keep indoors — at that point it is top-or-prune or move it outside (if hardy).

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

Cordyline australis size — frequently asked questions

How big does cordyline australis get?

Cordyline australis reaches in containers and indoors typically kept to 1-2 m. when grown indoors, and far larger where it grows unrestricted (outdoors reaches 3-10 m tall over many years). It gains real height on a trunk or main stem, adding a tier of leaves a year and eventually reaching for the ceiling — this is a plant you grow up, not out.

Is cordyline australis slow or fast growing?

Cordyline australis is a slow grower. Expect a decade or more — slow growers like this add only a few centimetres a year, so expect 8-15+ years to reach their indoor ceiling. Cordyline australis is a tree at heart. Indoors a pot and your ceiling keep it to in containers and indoors typically kept to 1-2 m., but in the ground it is a different scale of plant entirely (outdoors reaches 3-10 m tall over many years).

How long does cordyline australis take to reach full size?

Roughly a decade or more — slow growers like this add only a few centimetres a year, so expect 8-15+ years to reach their indoor ceiling. Light, pot size and feeding move that timeline more than anything else.

How do I keep cordyline australis smaller?

The decisive tool is the secateurs: cordyline australis can be topped (cut the main growing tip) to cap its height and force a bushier, shorter shape. Keeping it deliberately pot-bound in a snug container slows the whole plant and limits ultimate size. Prune in spring so it heals fast; remove the tallest leader back to a node to reset the height. Good news: slow growth means topping it once buys you years before it needs doing again.

How can I make cordyline australis grow bigger or faster?

It already wants the bright light it needs; warmth, a yearly pot-up and spring-summer feed are the accelerators. Pot up a size every year or two while young; restricted roots are the main thing holding height back. Feed regularly through the growing season and keep it warm — height comes from sustained good conditions.