Asplenium jacksonii

A rare natural hybrid between hart's-tongue (Asplenium scolopendrium) and black spleenwort (A. adiantum-nigrum), long known as ×Asplenophyllitis jacksonii. It is recorded only from Cornwall and Devon in south-west England, and Kew also lists France. It is sterile, so a plant can only be increased by division. Grow it like its parents: cool, humid and lightly shaded.

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 on rock (lithophyte)

Where it grows wild

Like its parents, it grows on shaded hedgebanks, old walls and rocky banks in a mild oceanic climate. It turns up only where both parents grow together.

Mostly lowland, at about 50–400 m. Few records carry an elevation.

FranceGreat Britain

🔒 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

Grow Asplenium jacksonii? Add it to a free garden and its full profile opens. Pro opens all 38,374 profiles in the library, plants and fungi.

Start free Sign in

More Asplenium

Asplenium platyneuron Asplenium bradleyi Asplenium pinnatifidum Asplenium resiliens Asplenium rhizophyllum Asplenium montanum Asplenium scolopendrium Asplenium tutwilerae Asplenium ceterach Asplenium monanthes Asplenium nidus Asplenium septentrionale All 1023 →

Profiles are drafts built from measured range and climate and from published sources; each section carries its own confidence in the app.