Huperzia serrata

A terrestrial clubmoss with toothed leaves that grows on the floor of moist temperate forests in Japan, Korea and the Russian Far East. It is slow and hard to keep in cultivation: shade, cool moist air, a humus-rich acidic forest soil and a genuine cold winter.

At home, aim for

Day Cool-growingTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Humid airBand in Plantistry

Light ShadeDLI and PPFD in Plantistry

Expects a seasonal restGrows in the ground

Where it grows wild

Grows in deep humus and moss on the floor of shady, humid broadleaf and mixed forests, often on slopes and along ravines.

Recorded from sea level to about 2,400 m, mostly around 400 m.

JapanKoreaRussian Far EastManchuriaNansei-shotoHawaiiCuba and HaitiMexico

🔒 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 3.0 licence, unmodified.