Aspidistra elatior
The cast-iron plant is a clump-forming, rhizomatous forest-floor plant with tough, dark green leaves. It is native to the islands of southern Japan, including Kuroshima, Suwanosejima and the Uji Islands. It grows in deep shade under evergreen broadleaf forest of Castanopsis and Ardisia. Deep shade, cool winters and irregular watering suit it, which is why it is one of the toughest houseplants. It stays at its best with low light, a real winter cool-down and a free-draining mix.
Where it grows wild
It grows in the understory of warm-temperate to subtropical evergreen broadleaf forest, alongside Castanopsis sieboldii and Ardisia sieboldii. Leaves rise singly from creeping rhizomes in humus-rich soil on the forest floor, in deep shade under a closed evergreen canopy.
The Japanese records span 20–325 m, median 84 m (16 records with an elevation). The native island populations are also at low elevation.
🔒 Growing it like that
The wild conditions above, turned into targets for a shelf, a tent or a greenhouse. The full profile has:
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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 Public domain licence, unmodified.