The remains of a fernery approximately 100m north-east of East Dene house

The remains of a fernery, built in the mid or late 19th century, are located approximately 100 meters northeast of East Dene house, and were part of the former East Dene estate.

The walls of the fernery are made of large rubble stone. The structure is partially sunken and has become overgrown with vegetation. The south gable-end wall features a central pointed-arch entranceway, although the door is no longer present. The low side stone walls sit partially below the surrounding ground level. The north end, which contains the grotto, extends beyond the main wall and is covered by an earthen mound. The glass roof has also been lost.

Inside, there is a stone-lined oblong planting area at the center of the building. The north-end wall includes bowl-shaped stone shelves that would have been used to propagate and display ferns. In the middle of the north wall, there is an entrance to a round-arch roofed grotto-style deep alcove. This area features a central sunken stone-lined floor that may have held water, along with additional stone shelves within the grotto walls.