Mature size & growth rate

How big does Long-leaf Parlour Palm (Chamaedorea oblongata) get?

Also called Long-leaf Parlour Palm, Hardy Bamboo Palm, Oblong-leaved Parlour Palm.

More about long-leaf parlour palm

About Long-leaf Parlour Palm

Chamaedorea oblongata · also called Long-leaf Parlour Palm, Hardy Bamboo Palm · houseplant

Chamaedorea oblongata is a solitary, slender palm from the understorey of moist forests in southern Mexico, Guatemala, and Honduras, valued for its unusually large, ovoid to oblong leaflets that give it a distinctive, lush appearance compared to other parlour palms. It grows slowly and tolerates low light, making it well suited to interiors, but it requires good drainage as it is sensitive to overwatering. Unlike many tropical palms it displays modest cool tolerance and can be grown outdoors in sheltered frost-free gardens. According to the ASPCA, Chamaedorea palms are non-toxic to cats and dogs.

Mature size: Up to 3 m tall in warm outdoor conditions; typically 1.5–2 m as a container plant indoors.

Indoor size vs how big it gets in the wild

Long-leaf Parlour Palm is a tree at heart. Indoors a pot and your ceiling keep it to typically 1.5–2 m as a container plant indoors., but in the ground it is a different scale of plant entirely (up to 3 m tall in warm outdoor conditions). Indoors and in a pot, expect typically 1.5–2 m as a container plant indoors.. In the ground with no restriction it is a completely different plant — up to 3 m tall in warm outdoor conditions — 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

Long-leaf Parlour Palm 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: feed with a dilute balanced liquid fertiliser (npk 10-10-10) monthly during the growing season (april–september); withhold feeding over winter.

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

How to keep long-leaf parlour palm smaller

You are not stuck with the maximum size. For long-leaf parlour palm specifically, these are the levers, in order of impact:

The decisive tool is the secateurs: long-leaf parlour palm 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 long-leaf parlour palm 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 long-leaf parlour palm bigger or faster

If you want it to fill the space sooner, push the conditions rather than hoping — for long-leaf parlour palm the accelerators are:

The biggest lever is light — a tree-type plant in dim light barely gains height; move it brighter.
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 long-leaf parlour palm light requirements page covers exactly how bright a spot it needs to grow at its potential instead of stalling.

When long-leaf parlour palm outgrows the room (or the pot)

"Too big" usually arrives as one of these signs for long-leaf parlour palm:

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 long-leaf parlour palm repotting guide. If you want more of this plant instead of a bigger one, the long-leaf parlour palm propagation guide turns prunings into new plants.

Long-leaf Parlour Palm size — frequently asked questions

How big does long-leaf parlour palm get?

Long-leaf Parlour Palm reaches typically 1.5–2 m as a container plant indoors. when grown indoors, and far larger where it grows unrestricted (up to 3 m tall in warm outdoor conditions). 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 long-leaf parlour palm slow or fast growing?

Long-leaf Parlour Palm 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. Long-leaf Parlour Palm is a tree at heart. Indoors a pot and your ceiling keep it to typically 1.5–2 m as a container plant indoors., but in the ground it is a different scale of plant entirely (up to 3 m tall in warm outdoor conditions).

How long does long-leaf parlour palm 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 long-leaf parlour palm smaller?

The decisive tool is the secateurs: long-leaf parlour palm 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 long-leaf parlour palm grow bigger or faster?

The biggest lever is light — a tree-type plant in dim light barely gains height; move it brighter. 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.