Mature size & growth rate

How big does Affinis Taro (Colocasia affinis) get?

Also called Affinis Elephant Ear, Green Taro, Mini Taro.

More about affinis taro

About Affinis Taro

Colocasia affinis · also called Affinis Elephant Ear, Green Taro · tropical

Colocasia affinis is a compact Araceae from South and Southeast Asia, bearing velvety dark green, sometimes purple-tinged, heart-shaped leaves on upright stems. Unlike the edible Colocasia esculenta, C. affinis is primarily an ornamental. All parts contain calcium oxalate crystals, making it toxic to pets and people if ingested raw.

Mature size: 30-60 cm tall indoors; up to 90 cm in warm outdoor settings

Watch for — Sluggish growth indoors: Move to a brighter spot in spring and increase feeding frequency. A moss pole is not needed as this species grows as a clump, not a climber.

Indoor size vs how big it gets in the wild

Affinis Taro 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 30-60 cm tall indoors. In the ground with no restriction it is a completely different plant — up to 90 cm in warm outdoor settings — which is why the pot, the light and the pruning matter so much for the size you actually end up with.

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

Affinis Taro 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: apply a balanced or high-potassium liquid fertiliser at half strength every 2-3 weeks during spring and summer. a potassium-rich formula promotes strong stems and large leaves. withhold fertiliser from october to february.

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

How to keep affinis taro smaller

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

Divide the clump every year or two — splitting affinis taro 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 affinis taro 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 affinis taro bigger or faster

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

When affinis taro outgrows the room (or the pot)

"Too big" usually arrives as one of these signs for affinis taro:

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

Affinis Taro size — frequently asked questions

How big does affinis taro get?

Affinis Taro reaches 30-60 cm tall indoors when grown indoors, and far larger where it grows unrestricted (up to 90 cm in warm outdoor settings). 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 affinis taro slow or fast growing?

Affinis Taro is a moderate grower. Expect three to six years to reach mature indoor size, gaining a steady amount each growing season. Affinis Taro 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 affinis taro 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 affinis taro smaller?

Divide the clump every year or two — splitting affinis taro 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 affinis taro 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.