Asplenium bouharmontii

A rare natural hybrid spleenwort of the Mediterranean coasts of southern France and north-west Italy, described by Badré & Prelli in 1982. It grows in coastal rock crevices with mild wet winters and dry summers; grow it bright, gritty and on the dry side in summer.

At home, aim for

Day Cool-growingTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Ordinary room humidityBand in Plantistry

Light Bright, filtered lightDLI and PPFD in Plantistry

Expects a seasonal restGrows on rock (lithophyte)

Where it grows wild

Records are from coastal rock outcrops between the Roussillon coast, Provence and Liguria; habitat notes were not reachable, but the sites suggest crevices in coastal, probably siliceous, rock. As a sterile hybrid it occurs only where its parent spleenworts grow together.

Near sea level to low hills (sites at 0–80 m).

FranceItaly

🔒 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.