Mature size & growth rate

How big does Zebra Temple Bells (Smithiantha zebrina) get?

Also called Zebra Temple Bells, Zebra Smithiantha.

More about zebra temple bells

About Zebra Temple Bells

Smithiantha zebrina · also called Zebra Temple Bells, Zebra Smithiantha · houseplant

One of the most widely cultivated Smithiantha species, prized for boldly patterned foliage — dark green leaves with contrasting silver-green zebra markings — and nodding, orange-red tubular flowers in autumn. Like all Smithianthas, it dies back to scaly rhizomes in winter. Best grown in high humidity on a pebble tray, away from direct sun.

Mature size: Up to 70 cm tall in peak growth, spreading 25–35 cm

Indoor size vs how big it gets in the wild

Zebra Temple Bells 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 up to 70 cm tall in peak growth, spreading 25–35 cm. 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

Zebra Temple Bells 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 every two weeks with a high-potassium liquid fertiliser at half strength from first spring growth through to end of flowering. stop feeding in autumn when foliage begins to die back.

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

How to keep zebra temple bells smaller

You are not stuck with the maximum size. For zebra temple bells specifically, these are the levers, in order of impact:

Divide the clump every year or two — splitting zebra temple bells 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 zebra temple bells 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 zebra temple bells bigger or faster

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

When zebra temple bells outgrows the room (or the pot)

"Too big" usually arrives as one of these signs for zebra temple bells:

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

Zebra Temple Bells size — frequently asked questions

How big does zebra temple bells get?

Zebra Temple Bells reaches up to 70 cm tall in peak growth, spreading 25–35 cm 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 zebra temple bells slow or fast growing?

Zebra Temple Bells is a moderate grower. Expect three to six years to reach mature indoor size, gaining a steady amount each growing season. Zebra Temple Bells 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 zebra temple bells 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 zebra temple bells smaller?

Divide the clump every year or two — splitting zebra temple bells 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 zebra temple bells 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.