Overview

Polypodium interjectum is a fern in the genus Polypodium, part of the Polypodiaceae family. Polypodium interjectum grows best in shade and partial shade, and tolerates well-drained and humus-rich soils and acidic and neutral pH. It is native to Belgium, Flemish Region, Walloon Region, Flanders, Grand Duchy of Luxembourg, Madeira Island, Madeira and Portugal Continental.

About

Polypodium interjectum is a fern that prefers shade to partial shade and suits sheltered positions. It grows best in moist, well-drained, humus-rich soils with an acidic to neutral pH. Native to parts of Belgium, Luxembourg, Madeira and mainland Portugal, it remains present through winter. Plant where soil and site conditions match its preference for shelter and steady moisture.

Wikipedia contributors, CC BY-SA 4.0 — Polypodium interjectum

About the genus

Polypodium is a genus of ferns in the family Polypodiaceae, subfamily Polypodioideae, according to the Pteridophyte Phylogeny Group classification of 2016 (PPG I). The genus is widely distributed throughout the world, with the highest species diversity in the tropics. The name is derived from Ancient Greek poly ("many") + podion, on account of the foot-like appearance of the rhizome and its branches.

Wikipedia contributors, "Polypodium", CC BY-SA 4.0 — Polypodium

In the garden

Polypodium interjectum belongs to the Polypodiaceae and is a fern native to Belgium (Flemish and Walloon regions), the Grand Duchy of Luxembourg, Madeira and continental Portugal. Its distribution across both mainland and island locations indicates a tolerance for mild, sheltered climates where shade is consistent. For cultivation, place plants in shade or partial shade with protection from strong exposure. Provide a humus-rich, well-drained soil that stays moist; the species tolerates acidic to neutral pH. Aim for a sheltered spot — a location protected from drying winds will match its natural preference and reduce stress on fronds during drier spells. In UK gardens it suits shaded borders, woodland-style plantings and other sheltered corners where moisture can be retained. Use it where a non-flowering foliage layer is needed beneath trees or beside shaded paths. Fronds persist through winter, so plan plantings with its winter presence in mind rather than as a seasonal filler.

Growing conditions

Best soil and position for Polypodium

Sunlight

shade, partial shade

Soil type

well-drained, humus-rich

Soil pH

acidic, neutral

Soil moisture

moist

Exposure

sheltered

Plant details

Polypodium interjectum size, habit and characteristics

Plant type

fern

Native to

Belgium, Flemish Region, Walloon Region, Flanders, Grand Duchy of Luxembourg, Madeira Island, Madeira, Portugal Continental

Care notes

Pruning and caring for Polypodium interjectum

Propagation

spores

Frequently asked questions