CABINET OF CURIOSITIES

Dry stone walls, and old stone walls held together with mortar, acquire a flora of resilient species that thrive in their damp crevices. In...

Thursday's Guardian Country Diary is about this remarkable 'golden' wall at Hexham, in Northumberland's Tyne valley. It...

There aren't many plants that are so intimately associated with man-made walls that this tough little fern, wall rue Asplenium ruta-m...

Three tough fern species that remain green throughout the winter and survive all-year-round in a very inhospitable habitat. First up, w...