Repotting guide

When & how to repot Green-winged Orchid (Anacamptis morio)

Also called Green-winged Orchid, Green-veined Orchid.

More about green-winged orchid

About Green-winged Orchid

Anacamptis morio · also called Green-winged Orchid, Green-veined Orchid · flowering

Anacamptis morio (formerly Orchis morio) is a compact terrestrial orchid native to traditional, unimproved grasslands across Europe, including lowland England and Wales, where it has declined sharply due to habitat loss. It produces dense spikes of pink to purple flowers (occasionally white) with a distinctive hood striped with dark green veins in late April and May. Unlike many terrestrial orchids it can be introduced to short, low-fertility turf gardens given the correct soil mycobiome. The Orchidaceae family is broadly considered non-toxic to pets.

Mature size: 10–30 cm tall; basal rosette 8–15 cm across

How to tell green-winged orchid needs repotting

Repotting on a calendar is less reliable than reading the plant. For green-winged orchid, watch for these signs:

The bark medium has broken down into a dark, soggy, soil-like mush that no longer drains.
Roots are climbing out of the pot in all directions (this is normal for green-winged orchid and not on its own a reason to repot).
Roots inside the pot are brown, soft and rotting rather than firm and green/silver.
It is about two years since the last repot, or you can smell sour, decomposing bark — repot just after flowering finishes.

For the underlying biology of a pot-bound root system and why it stalls a plant, see our guide to spotting and fixing a root-bound plant.

How often to repot green-winged orchid

Every 1–2 years, when the bark breaks down. Green-winged Orchid's growth habit — low, rosette-forming herbaceous perennial growing from paired underground tubers; produces unspotted basal leaves in autumn, then a compact flower spike in spring before dying back to dormancy. — sets the pace. Anacamptis morio (formerly Orchis morio) is a compact terrestrial orchid native to traditional, unimproved grasslands across Europe, including lowland England and Wales, where it has declined sharply due to habitat loss. It produces dense spikes of pink to purple flowers (occasionally white) with a distinctive hood striped with dark green veins in late April and May. Unlike many terrestrial orchids it can be introduced to short, low-fertility turf gardens given the correct soil mycobiome. The Orchidaceae family is broadly considered non-toxic to pets.

What size pot to step green-winged orchid up to

Keep green-winged orchid in the same size pot, or go up just one, only if the roots have genuinely outgrown it. Orchids flower better slightly snug, and a big pot of bark stays wet and rots the roots. The reason you are repotting is the broken-down bark, not a need for more space — a clear pot lets you watch the roots.

Not sure of the exact diameter? Our pot size calculator takes the current pot and root spread and tells you the right next size — it deliberately recommends a single step up, never a big jump.

The best time of year to repot green-winged orchid

Repot green-winged orchid immediately after the flowers have finished, just as new roots or a new growth start to emerge — those fresh roots establish quickly in new bark. Never repot an orchid in full bloom; you will drop the flowers and shock the plant.

Step-by-step: repotting green-winged orchid

Repot after flowering. Wait until green-winged orchid has finished blooming and is pushing new roots. Soak the pot first so the roots are pliable and less likely to snap.
Remove all the old bark. Slide the plant out and crumble away every scrap of broken-down bark — that soggy mush is the actual problem you are fixing.
Trim dead roots. Cut off any brown, hollow or mushy roots with sterilised snips. Keep all the firm green/silver ones.
Repot into fresh bark. Settle green-winged orchid into the same or one-size-up pot of fresh coarse well-drained, low-fertility neutral to alkaline loam or clay, working bark between the roots so there are no big air gaps.
Hold off watering briefly. Mist or wait a few days before the first proper water so any cut roots seal. Then resume the normal soak-and-drain rhythm.

Aftercare

Give green-winged orchid a few days before its first proper watering so cut roots seal, then return to the weekly soak-and-drain. Keep it bright, humid and out of direct sun while new roots grip the fresh bark. It may pause growth briefly; that is expected. Do not fertilise for about 3 weeks — fresh mix already carries nutrients and feeding freshly disturbed roots scorches them.

The right soil mix for green-winged orchid

Green-winged Orchid wants well-drained, low-fertility neutral to alkaline loam or clay. Suited to calcareous clay loams and neutral short turf; highly fertile or well-manured soils favour competing grasses and are toxic to the mycorrhizal fungi the orchid needs — keep soil lean. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting green-winged orchid — frequently asked questions

How often should you repot green-winged orchid?

Every 1–2 years, when the bark breaks down for green-winged orchid. Repot green-winged orchid every 1–2 years — but because the bark medium has broken down and gone soggy, not because it has outgrown the pot. Do it just after flowering, into the same size or one up, using fresh well-drained, low-fertility neutral to alkaline loam or clay. Old, decomposed bark suffocating the roots is the real problem.

What size pot does green-winged orchid need?

When is the best time of year to repot green-winged orchid?

Why does green-winged orchid get repotted if it isn't outgrowing the pot?

Because the bark medium breaks down. Over 1–2 years the chunky bark rots into a dense, soggy, soil-like mush that suffocates the roots — that, not size, is why you repot green-winged orchid. Refresh it into fresh coarse bark just after flowering.

Should you fertilise green-winged orchid after repotting?

Not immediately. Wait about 3 weeks after repotting green-winged orchid. Fresh mix already contains nutrients, and feeding freshly cut or disturbed roots burns them. Resume your normal feeding routine once you see new growth.