Mature size & growth rate

How big does Blunt Greenhood (Pterostylis curta) get?

Also called Blunt Greenhood Orchid, Short Greenhood.

More about blunt greenhood

About Blunt Greenhood

Pterostylis curta · also called Blunt Greenhood Orchid, Short Greenhood · tropical

Pterostylis curta is a charming small terrestrial orchid native to southeastern Australia, producing solitary or few green and white hooded flowers in a distinctive helmet shape. It grows from small underground tubers, becoming dormant in summer. It thrives in cool, damp, well-drained conditions with shade. Pet-safe as an orchid.

Mature size: 10-20 cm tall when in flower

Watch for — Tuber rot in summer: Watering during summer dormancy quickly rots the tuber. Keep completely dry from late spring until new growth appears in autumn.

Indoor size vs how big it gets in the wild

Blunt Greenhood is a naturally small plant — it stays shelf- and desk-sized for its whole life, so it never becomes a space problem. Indoors and in a pot, expect 10-20 cm tall when in flower. 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 grows mostly by adding leaves, offsets or a slightly wider rosette rather than gaining height — the footprint barely changes year to year.

Growth rate and years to mature

Blunt Greenhood 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: feed sparingly — a very dilute balanced fertiliser at quarter strength once per month during the autumn-to-spring growing season is sufficient. excess nutrients cause lush but weak growth and may damage the fine roots.

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

How to keep blunt greenhood smaller

Good news — blunt greenhood barely needs managing. If you do want to keep it tidy:

Divide or remove offsets when the pot looks crowded to keep blunt greenhood to a single tidy clump.
Keeping it slightly pot-bound and easing back on feed naturally caps the size.
Pinch or remove the oldest, tiredest leaves so energy goes into a compact, fresh-looking plant.

How to grow blunt greenhood bigger or faster

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

Move it to brighter (but not scorching) light — that is the single biggest growth lever for a small plant.
A small step up in pot size every couple of years gives the roots a little more room without triggering a size jump.
Feed lightly through the growing season; this plant simply will not race however hard you push it.

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

When blunt greenhood outgrows the room (or the pot)

"Too big" usually arrives as one of these signs for blunt greenhood:

Roots circling the bottom or pushing out of the drainage hole — it wants a pot one size up, not a bigger room.
Offsets crowding the surface so the original plant looks squashed.
Honestly, blunt greenhood rarely outgrows a room — outgrowing its pot is the only realistic limit.

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

Blunt Greenhood size — frequently asked questions

How big does blunt greenhood get?

Blunt Greenhood reaches 10-20 cm tall when in flower when grown indoors. It grows mostly by adding leaves, offsets or a slightly wider rosette rather than gaining height — the footprint barely changes year to year.

Is blunt greenhood slow or fast growing?

Blunt Greenhood is a moderate grower. Expect three to six years to reach mature indoor size, gaining a steady amount each growing season. Blunt Greenhood is a naturally small plant — it stays shelf- and desk-sized for its whole life, so it never becomes a space problem.

How long does blunt greenhood 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 blunt greenhood smaller?

Divide or remove offsets when the pot looks crowded to keep blunt greenhood to a single tidy clump. Keeping it slightly pot-bound and easing back on feed naturally caps the size. Pinch or remove the oldest, tiredest leaves so energy goes into a compact, fresh-looking plant.

How can I make blunt greenhood grow bigger or faster?

Move it to brighter (but not scorching) light — that is the single biggest growth lever for a small plant. A small step up in pot size every couple of years gives the roots a little more room without triggering a size jump. Feed lightly through the growing season; this plant simply will not race however hard you push it.