The light comes through it. The petals are thin, paper-like, crinkled — given to letting the sun pass through them. The whole flower, in the right backlight, becomes a small yellow lantern held up on a thin smooth stem out of the damp shaded corner where it has chosen to grow. The leaf at the base is pinnate, fern-like, deeply divided. The petals are four — never more, never fewer — and the colour is a clear bright yellow that holds against the dark behind it. This is Papaver cambricum — the Welsh poppy. The only one of the four British poppies that was already here when the first farmers arrived.
The native
The common, long-headed and opium poppies are archaeophytes. They came in with Neolithic agriculture six thousand years ago, mixed in with the seed grain of the first farmers, and have been with us ever since. We have stopped calling them visitors. But they are not native.
The Welsh poppy is. It was already growing on the damp hillsides of what would become Wales when the people who would later become the Welsh were still hunters with no fields to weed. The species name cambricum comes from Cambria — the Roman name for Wales — and the plant has belonged to this country longer than the language we use to describe it.
A small taxonomic story is attached. When the botanist Louis Viguier named the genus Meconopsis in 1814, this Welsh flower was the type species — the founding member against which every later Meconopsis would be measured. The genus went on to contain the famous Himalayan blue poppies. Then, in 2012, DNA analysis showed that the Welsh flower was not a Meconopsis at all. It was a true Papaver. The genus had been named for a species that did not belong in it. The Welsh poppy was reclassified, the Himalayans kept the Meconopsis name, and the original member of the group went home.
How to be sure
The colour can vary. Sometimes a clear bright yellow. Sometimes a deeper gold. Occasionally a true orange, in a rare variant that turns up here and there in single populations.
Where a stem has been damaged by weather or browsing, the sap that appears is yellow — a small but reliable difference from the milky-white of the common poppy. The plant has a long taproot and is drought-tolerant once established, but it will not flower without shade.
The common poppy advertises. The Welsh poppy hides.
Where to find it
Damp shade. The exact opposite of where Papaver rhoeas wants to be.
A north-facing garden wall where the rain runs off and the sun never quite reaches. The corner of a woodland where the canopy holds the moisture in. A gully on a Welsh or Cumbrian hillside where the air sits cool all summer and the rock seeps. The damp side of a churchyard. Any cool, shaded, slightly acidic patch where the soil stays moist through August.
Geographically: Wales, the Welsh Marches, the South-West, Cumbria and the Lake District — the western and northern edges of Britain where the rain is heaviest and the shade is reliable. Inland, it appears here and there in cool gardens and in old churchyards where it has self-seeded from someone's grandmother's planting fifty years ago.
Once you have found one, it stays. The Welsh poppy self-seeds vigorously — a single plant can produce a small colony within four years, and a tolerated colony will hold a corner of a damp garden for decades. May through August is the flowering window. The peak is June and July.
What it asks of you
Go and find it. The common poppy will come to you on the verge of any motorway in southern England. The Welsh poppy will not. You will need to walk to it — to the damp side of an old garden wall, or up a hillside in the Welsh borderlands, or into the corner of a wood where the sun does not quite reach.
The reward is the only flower in this country that was already flowering here when the first farmers arrived six thousand years ago. Yellow. Four petals. Tucked into the shade. Worth the walk.
