Mature size & growth rate

How big does Canna 'The President' (Canna 'The President') get?

Also called The President Canna Lily, President Canna.

More about canna 'the president'

About Canna 'The President'

Canna 'The President' · also called The President Canna Lily, President Canna · flowering

Canna 'The President' is a classic, widely grown cultivar bearing large, brilliant scarlet-red flowers above broad, rich green foliage. A long-season bloomer and vigorous grower, it has been a popular bedding and container plant for over a century. It performs best in full sun with consistently moist, fertile soil, and needs frost protection in cool climates. Mildly toxic to pets.

Mature size: 90-120 cm tall

Watch for — Canna leaf roller: A very common pest of cannas; larvae roll leaves and feed inside. Check new growth weekly and remove by hand; apply Bt spray at first sign.

Indoor size vs how big it gets in the wild

Canna 'The President' 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 90-120 cm tall. 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

Canna 'The President' 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: apply a balanced granular fertiliser at planting and supplement with a high-potassium liquid feed every 2-3 weeks from early summer through to late summer. deadhead regularly to encourage continued flowering.

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

How to keep canna 'the president' smaller

You are not stuck with the maximum size. For canna 'the president' specifically, these are the levers, in order of impact:

Divide the clump every year or two — splitting canna 'the president' 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 canna 'the president' 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 canna 'the president' bigger or faster

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

Give it a wider pot and let the clump fill it — width is exactly how this plant gets bigger.
Good light plus regular feeding maximises offset and runner production.
Leave plantlets and offsets attached and feed through the growing season for the fastest spread.

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

When canna 'the president' outgrows the room (or the pot)

"Too big" usually arrives as one of these signs for canna 'the president':

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

Canna 'The President' size — frequently asked questions

How big does canna 'the president' get?

Canna 'The President' reaches 90-120 cm tall 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 canna 'the president' slow or fast growing?

Canna 'The President' is a fast grower. Expect two to four years from a young plant to a room-filling specimen in good light. Canna 'The President' 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 canna 'the president' 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 canna 'the president' smaller?

Divide the clump every year or two — splitting canna 'the president' 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 canna 'the president' grow bigger or faster?

Give it a wider pot and let the clump fill it — width is exactly how this plant gets bigger. Good light plus regular feeding maximises offset and runner production. Leave plantlets and offsets attached and feed through the growing season for the fastest spread.