Stanway, Gloucestershire

Green thoughts in a green shade

The other night I and a small group of neighbours went to visit a local water mill that has been beautifully restored. While I was walking around the outside as the evening light faded, I noticed this shed, and especially its roof, which is covered with corrugated iron – regular readers will know this is one of my favourite materials. Whether by accident or design, the corrugated covering of this roof has become home to a green carpet of moss, grass, and other plants. An informal green roof is the result.

Green roofs are quite fashionable these days. Their construction usually involves several layers of different materials to protect the roof structure from vapour, water, and roots, as well as a substrate in which to grow the plants. This one, as far as I can see, is just a sheet of corrugated metal with plants growing on it – hence my use of the word ‘informal’. It’s not going to last for ever, but this roof with its covering of greenery is a happy addition to this workshop down a secluded lane surrounded and shaded by trees.

Much Wenlock, Shropshire

Space invaders

After the church, the chapter house was often the most impressive part of a medieval monastery – especially if that monastery was a house belonging to the Cluniacs, an order who were famous for their ornate buildings. This is part of the chapter house at Wenlock Abbey, which was originally a Saxon monastery but was re-established by the Cluniacs after the Norman conquest.

The monks of Wenlock built their chapter house in about 1140. Every day they met here, entering through a magnificent triple-arched doorway, and sitting down to discuss abbey business and hear a reading of one chapter of the monastic rule. What remains of the interior now is three high stone walls, each decorated with intricate multiple arcading. This kind of decoration, covered with chevron or pellet motifs or with carved mouldings, is a hallmark of the most elaborate late Norman architecture in England.

I photographed the one wall of the three that has plants growing on it. The other two are kept scrupulously clear of vegetation, but here nature is taking its course and the flowers (are they some form of campanula?) grow freely. I’m not sure if this is a conscious decision on the part of the building’s custodians, English Heritage, although I do know that they have approved of this kind of equilibrium between plants and stones at certain sites.

Deliberate or not, I like this modest invasion. The plants don’t seem to be doing any harm to the masonry and the unruly splash of colour they provide is welcome amongst the grey stone and clipped lawns. There is more than one way to display a ruin, and old buildings are hospitable to other species than our own.

Wigmore, Herefordshire

I grew up visiting castles. As a child I loved their otherness, and got as good at identifying shell keeps and barbicans as imagining Sir Nigel and Ivanhoe rampaging around inside. Like old churches, medieval castles were a rapid and accessible escape route into the rich parallel world of history.

Ancient as they were, the castles of my youth had, for the most part, a particular quality that wasn’t much to do with their medieval origins. They were nearly all in the care of the Ministry of Public Building and Works. You found them by following official governmental signs. Once there, you found your way round using smaller signs and a guidebook, bound in blue and, if you were lucky, equipped with a fold-out map stuck into the back of the booklet. You unfolded this rather beautifully drawn map, and tried to work out where you were while it tried to blow away in the wind or invert itself like a flimsy umbrella. And it was quite easy to see where you were going because everything was so cared for. Lawns were manicured, paths were well laid, walls were pointed.

I’m very grateful to the Ministry of Public Building and Works, later the Department of the Environment, later English Heritage, for looking after our castles in this way, and for giving me enjoyment and education in equal measure. But wasn’t it all a bit too kempt? And how much did those lawns and concrete paths have to do with medieval history? There is another way: welcome to Wigmore Castle.

The fragmentary 12th-century ruins of Wigmore Castle are on a hill overlooking the Welsh-English border. When conservators looked at how best to preserve these isolated towers, arches, and bits of wall a few years ago, they decided to stabilize the masonry but not to clean up the growths of plant and bush that have invaded the place over the last few centuries. So an expert in nature conservation worked alongside those in building conservation.

The result is wonderful. Coming here you get a sense that you’re exploring as walls and towers loom out of the undergrowth. And my foraging wife found ripe blackberries for us to eat while I admired the masonry. Be warned: with its steep steps and muddy paths this isn’t a place for people who are unsteady on their legs. But if you can put up with the rough terrain, it’s a good place to come to witness the flowering of a ruin.