Mature size & growth rate

How big does Akebia quinata (Akebia quinata) get?

Also called chocolate vine, five-leaf akebia, fiveleaf akebia.

More about akebia quinata

About Akebia quinata

Akebia quinata · also called chocolate vine, five-leaf akebia · flowering

A semi-evergreen twining climber with elegant five-fingered leaves and spicy, chocolate-vanilla-scented maroon flowers in spring. Vigorous and easy in sun or part shade, it can produce sausage-shaped purple fruits when cross-pollinated. Beautiful on pergolas and fences, it is fast and rampant — and considered invasive in parts of North America — so site it where its spread can be controlled.

Mature size: Commonly 6-12 m tall and wide on a large support; needs annual pruning to keep within bounds.

Indoor size vs how big it gets in the wild

Akebia quinata is a tree at heart. Indoors a pot and your ceiling keep it to commonly 6-12 m tall and wide on a large support, but in the ground it is a different scale of plant entirely (needs annual pruning to keep within bounds.). Indoors and in a pot, expect commonly 6-12 m tall and wide on a large support. In the ground with no restriction it is a completely different plant — needs annual pruning to keep within bounds. — 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

Akebia quinata is a fast grower. Realistically, expect two to four years from a young plant to a room-filling specimen in good light. Its feeding profile backs this up: rarely needs feeding in reasonable soil. if growth is weak, apply a balanced general-purpose fertiliser in spring. avoid heavy feeding, which only accelerates its already vigorous, potentially invasive growth.

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

How to keep akebia quinata smaller

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

The decisive tool is the secateurs: akebia quinata 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.
Expect to top or hard-prune it every year or two — left alone it heads for the ceiling.

The keep-it-smaller method, step by step

Pick the new height. Decide how tall you want akebia quinata 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 akebia quinata bigger or faster

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

When akebia quinata outgrows the room (or the pot)

"Too big" usually arrives as one of these signs for akebia quinata:

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 akebia quinata repotting guide. If you want more of this plant instead of a bigger one, the akebia quinata propagation guide turns prunings into new plants.

Akebia quinata size — frequently asked questions

How big does akebia quinata get?

Akebia quinata reaches commonly 6-12 m tall and wide on a large support when grown indoors, and far larger where it grows unrestricted (needs annual pruning to keep within bounds.). 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 akebia quinata slow or fast growing?

Akebia quinata is a fast grower. Expect two to four years from a young plant to a room-filling specimen in good light. Akebia quinata is a tree at heart. Indoors a pot and your ceiling keep it to commonly 6-12 m tall and wide on a large support, but in the ground it is a different scale of plant entirely (needs annual pruning to keep within bounds.).

How long does akebia quinata take to reach full size?

Roughly two to four years from a young plant to a room-filling specimen in good light. Light, pot size and feeding move that timeline more than anything else.

How do I keep akebia quinata smaller?

The decisive tool is the secateurs: akebia quinata 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. Expect to top or hard-prune it every year or two — left alone it heads for the ceiling.

How can I make akebia quinata 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.