Mature size & growth rate

How big does Plectranthus scutellarioides 'Black Dragon' (Plectranthus scutellarioides 'Black Dragon') get?

Also called Black Dragon Coleus, Dark Coleus.

More about plectranthus scutellarioides 'black dragon'

About Plectranthus scutellarioides 'Black Dragon'

Plectranthus scutellarioides 'Black Dragon' · also called Black Dragon Coleus, Dark Coleus · flowering

'Black Dragon' is a compact coleus prized for deeply ruffled, near-black burgundy foliage rather than its small blue flower spikes. Grown as a tender annual in beds or containers, it thrives in part shade with rich moist soil and pinches into a dense mound. Strong colour develops in bright, filtered light through the warm season.

Mature size: Typically 30-45 cm tall and 30-40 cm wide.

Watch for — Leggy, sparse growth: Skipping tip-pinching and letting flower spikes develop causes stretching; pinch regularly and remove blooms to keep the plant dense.

Indoor size vs how big it gets in the wild

Plectranthus scutellarioides 'Black Dragon' reaches its full size within one growing season — there is no "long-term" size, just how big it gets before you harvest or it dies back. Indoors and in a pot, expect typically 30-45 cm tall and 30-40 cm wide.. 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.

It sizes up fast and once, racing from seedling to full size in a single season; after cropping it is finished, so size is a within-season question.

Growth rate and years to mature

Plectranthus scutellarioides 'Black Dragon' is a moderate grower. Realistically, expect a single growing season — it reaches full size in one year, then is done. Its feeding profile backs this up: feed every 2-4 weeks through the growing season with a balanced liquid fertiliser at half strength; over-feeding with high nitrogen can dull the dark colour and force leggy growth.

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

How to keep plectranthus scutellarioides 'black dragon' smaller

You are not stuck with the maximum size. For plectranthus scutellarioides 'black dragon' specifically, these are the levers, in order of impact:

Choose a compact or dwarf variety of plectranthus scutellarioides 'black dragon' from the start — that is the most reliable size control for an annual.
Grow it in a smaller container to naturally limit how large it gets.
For some crops, pinching or pruning the growing tips keeps the plant shorter and bushier.
Sow a little later or space plants closer if you specifically want smaller individual plants.

How to grow plectranthus scutellarioides 'black dragon' bigger or faster

If you want it to fill the space sooner, push the conditions rather than hoping — for plectranthus scutellarioides 'black dragon' the accelerators are:

Full sun, warm soil and steady water are what drive a crop to full size fastest.
Sow at the right time for your zone so it gets the whole season to size up.
Feed appropriately for the crop and never let it check (stall) from drought or cold.

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

When plectranthus scutellarioides 'black dragon' outgrows the room (or the pot)

"Too big" usually arrives as one of these signs for plectranthus scutellarioides 'black dragon':

It sprawls beyond its bed or container before harvest — usually a spacing or support issue.
It flops or needs staking once it hits full height.
Once it has fruited or bolted, it is at its final size for good — the next plant is a new sowing.

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

Plectranthus scutellarioides 'Black Dragon' size — frequently asked questions

How big does plectranthus scutellarioides 'black dragon' get?

Plectranthus scutellarioides 'Black Dragon' reaches typically 30-45 cm tall and 30-40 cm wide. when grown indoors. It sizes up fast and once, racing from seedling to full size in a single season; after cropping it is finished, so size is a within-season question.

Is plectranthus scutellarioides 'black dragon' slow or fast growing?

Plectranthus scutellarioides 'Black Dragon' is a moderate grower. Expect a single growing season — it reaches full size in one year, then is done. Plectranthus scutellarioides 'Black Dragon' reaches its full size within one growing season — there is no "long-term" size, just how big it gets before you harvest or it dies back.

How long does plectranthus scutellarioides 'black dragon' take to reach full size?

Roughly a single growing season — it reaches full size in one year, then is done. Light, pot size and feeding move that timeline more than anything else.

How do I keep plectranthus scutellarioides 'black dragon' smaller?

Choose a compact or dwarf variety of plectranthus scutellarioides 'black dragon' from the start — that is the most reliable size control for an annual. Grow it in a smaller container to naturally limit how large it gets. For some crops, pinching or pruning the growing tips keeps the plant shorter and bushier. Sow a little later or space plants closer if you specifically want smaller individual plants.

How can I make plectranthus scutellarioides 'black dragon' grow bigger or faster?

Full sun, warm soil and steady water are what drive a crop to full size fastest. Sow at the right time for your zone so it gets the whole season to size up. Feed appropriately for the crop and never let it check (stall) from drought or cold.