Mature size & growth rate

How big does Imperial Green (Philodendron 'Imperial Green') get?

Also called Imperial Green, Imperial Green Philodendron.

More about imperial green

About Imperial Green

Philodendron 'Imperial Green' · also called Imperial Green, Imperial Green Philodendron · houseplant

Imperial Green is a self-heading Philodendron hybrid prized for its broad, glossy emerald leaves that radiate from a tight central rosette. Unlike vining types it stays compact and upright, making it a forgiving statement houseplant. It tolerates moderate light, dislikes soggy roots, and grows slowly into a full, leathery clump roughly knee-high indoors.

Mature size: Around 60-90 cm tall and wide indoors, with individual leaves reaching 20-30 cm.

Watch for — Leggy, small new growth: Insufficient light. Move to a brighter spot with bright indirect light to restore full, broad leaves.

Indoor size vs how big it gets in the wild

Imperial Green does not get tall — it gets long. Size here is about stem length and how you train or cut it, not how much floor it claims. Indoors and in a pot, expect around 60-90 cm tall and wide indoors, with individual leaves reaching 20-30 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.

Growth shows up as lengthening stems that trail down or climb up a support; the plant can be kept tiny or grown metres long from the exact same root system.

Growth rate and years to mature

Imperial Green is a slow grower. Realistically, expect many years — it gains very little each season, so it can hold the same shelf-sized footprint for 5-10+ years. Its feeding profile backs this up: feed monthly in spring and summer with a balanced liquid houseplant fertiliser at half strength. pause in autumn and winter. flush the soil occasionally to prevent salt buildup, which browns leaf tips.

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

How to keep imperial green smaller

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

Trim the longest vines back to the length you want — imperial green takes hard cutting well and bushes out from the cut.
Cut just above a leaf node; each trimmed stem usually branches into two, so pruning makes it fuller, not sparser.
The cuttings root easily in water or mix, so "keeping it smaller" doubles as free new plants.
A trim once or twice a season is usually enough to hold its length.

The keep-it-smaller method, step by step

Decide the length you want. Pick the point each vine of imperial green should stop — you can be aggressive; it regrows readily.
Cut just above a node. Snip about 0.5 cm above a leaf node so the stem branches there instead of dying back.
Root the cuttings. Drop the trimmed pieces in water or mix — they root in 2-4 weeks and can fill the same pot for a bushier look.
Repeat as it runs. Re-trim whenever it overshoots; regular light pruning keeps it both smaller and fuller.

How to grow imperial green bigger or faster

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

More (indirect) light dramatically lengthens the vines and enlarges the leaves.
Give it something to climb — many vines grow far faster and bigger up a support than trailing.
Feed through spring and summer and keep it consistently watered while it is actively running.

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

When imperial green outgrows the room (or the pot)

"Too big" usually arrives as one of these signs for imperial green:

Vines pooling on the floor or wrapping past where you want them — purely a trimming cue, not a repot one.
Bare, leggy stems with leaves only at the tips (usually a light problem, not a size one).
A tangled mass that has outrun its support and needs cutting back and re-training.

If it is the pot rather than the room, it is a repotting job, not a goodbye — see the imperial green repotting guide. If you want more of this plant instead of a bigger one, the imperial green propagation guide turns prunings into new plants.

Imperial Green size — frequently asked questions

How big does imperial green get?

Imperial Green reaches around 60-90 cm tall and wide indoors, with individual leaves reaching 20-30 cm. when grown indoors. Growth shows up as lengthening stems that trail down or climb up a support; the plant can be kept tiny or grown metres long from the exact same root system.

Is imperial green slow or fast growing?

Imperial Green is a slow grower. Expect many years — it gains very little each season, so it can hold the same shelf-sized footprint for 5-10+ years. Imperial Green does not get tall — it gets long. Size here is about stem length and how you train or cut it, not how much floor it claims.

How long does imperial green take to reach full size?

Roughly many years — it gains very little each season, so it can hold the same shelf-sized footprint for 5-10+ years. Light, pot size and feeding move that timeline more than anything else.

How do I keep imperial green smaller?

Trim the longest vines back to the length you want — imperial green takes hard cutting well and bushes out from the cut. Cut just above a leaf node; each trimmed stem usually branches into two, so pruning makes it fuller, not sparser. The cuttings root easily in water or mix, so "keeping it smaller" doubles as free new plants. A trim once or twice a season is usually enough to hold its length.

How can I make imperial green grow bigger or faster?

More (indirect) light dramatically lengthens the vines and enlarges the leaves. Give it something to climb — many vines grow far faster and bigger up a support than trailing. Feed through spring and summer and keep it consistently watered while it is actively running.