Yellow is the colour of happiness, optimism, enlightenment, creativity, hope, cheerfulness, sunshine … and the quintessential colour of Spring.

Yellow is also the most luminous in the colour spectrum – the colour that most easily catches the human eye but, more importantly, the eyes of bees, so it’s no surprise that yellow is the most common flower colour. Here in Wales, after experiencing only my second British winter in thirty-odd years, I have been delighted by the coming of Spring, and both charmed and uplifted by the yellow wildflowers everywhere. First came the Dandelion and Daffodil, the Lesser celandine and the paler shade of the Primrose and, in boggy places, the Marsh marigold.

Now, as spring becomes summer, the succession of yellow continues with fields and meadows carpeted in yellow. We have the many varieties of Buttercup, vibrant Bird’s foot trefoil and Yellow archangel, the Dandelion look-alike Cat’s ear and Nipplewort, and in boggy places, Yellow flag iris. It is truly glorious.