Mature size & growth rate

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

Also called The President clematis, blue-purple clematis.

More about clematis 'the president'

About Clematis 'The President'

Clematis 'The President' · also called The President clematis, blue-purple clematis · flowering

Clematis 'The President' is a vigorous large-flowered climber bearing rich purple-blue blooms up to 15 cm across with silvery undersides and contrasting reddish anthers, flowering in early summer and again in late summer. A dependable Group 2 clematis needing only light spring pruning, it is excellent on walls, trellis and obelisks in sun or part shade.

Mature size: 2-3 m (6.5-10 ft) tall with a spread of about 1 m; trains up trellis, walls and obelisks

Watch for — Bare, leggy base: Group 2 clematis flower on old wood and can become bare low down. Train shoots outward and low, and reduce some stems in spring to encourage basal growth.

Indoor size vs how big it gets in the wild

Clematis 'The President' is a tree at heart. Indoors a pot and your ceiling keep it to 2-3 m (6.5-10 ft) tall with a spread of about 1 m, but in the ground it is a different scale of plant entirely (trains up trellis, walls and obelisks). Indoors and in a pot, expect 2-3 m (6.5-10 ft) tall with a spread of about 1 m. In the ground with no restriction it is a completely different plant — trains up trellis, walls and obelisks — 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

Clematis '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: hungry plant. apply a balanced or potassium-rich rose/clematis feed in early spring and again after the first flush, plus an annual mulch of compost or well-rotted manure kept off the stems, to support both flushes of flower.

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

How to keep clematis 'the president' smaller

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

The decisive tool is the secateurs: clematis 'the president' 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 clematis 'the president' 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 clematis 'the president' bigger or faster

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

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

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

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

Clematis 'The President' size — frequently asked questions

How big does clematis 'the president' get?

Clematis 'The President' reaches 2-3 m (6.5-10 ft) tall with a spread of about 1 m when grown indoors, and far larger where it grows unrestricted (trains up trellis, walls and obelisks). 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 clematis 'the president' slow or fast growing?

Clematis 'The President' is a fast grower. Expect two to four years from a young plant to a room-filling specimen in good light. Clematis 'The President' is a tree at heart. Indoors a pot and your ceiling keep it to 2-3 m (6.5-10 ft) tall with a spread of about 1 m, but in the ground it is a different scale of plant entirely (trains up trellis, walls and obelisks).

How long does clematis '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 clematis 'the president' smaller?

The decisive tool is the secateurs: clematis 'the president' 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 clematis 'the president' 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.