Blechnum montanum

Mountain kiokio is a hardy New Zealand ground fern that spreads by creeping rhizomes into patches in montane and subalpine forest margins, scrub and tussock. It wants cool, wet, cloudy conditions year round and handles frost, so it suits a cool shaded garden bed far better than a warm indoor room.

At home, aim for

Day Cool-growingTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Humid airBand in Plantistry

Light Dappled lightDLI and PPFD in Plantistry

Expects a seasonal restGrows in the ground

Where it grows wild

Grows on the ground in montane beech forest, forest margins, subalpine scrub and among tussock, often in fairly open, cool, wet sites. Detail here comes from the measured records and general knowledge of the New Zealand kiokio group.

Recorded from 25 to 1372 m, median 660 m; mostly montane to subalpine.

New Zealand North IslandNew Zealand South IslandChatham IslandsAntipodes IslandsAuckland IslandsCampbell Islands

🔒 Growing it like that

The wild conditions above, turned into targets for a shelf, a tent or a greenhouse. The full profile has:

✓ Day and night temperature targets, and the limits it tolerates

✓ Humidity band, and how to hold it

✓ Light as DLI and PPFD for a grow light

✓ Wet and dry seasons, and whether to rest it

✓ Substrate and airflow

✓ A step-by-step setup to grow it like the wild

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Profiles are drafts built from measured range and climate and from published sources; each section carries its own confidence in the app. Photo from Wikimedia Commons, used under its CC BY-SA 4.0 licence, unmodified.