Gardens, roadsides, walls, wasteland.
Solitary pale blue flowers, up to 4cm across. The flowers are sometimes white, pink or light purple. Pollinated by bees.
Bird's Nest, Blue Crown, Blue Spiderflower, Chase-the-devil, Devil in a Bush, Devil-in-the-Bush, Garden Fennel, Jack in Prison, Jack in the Green, Katherine's flower, Kiss-me-twice-before-I-rise, Lady in the Bower, Love-in-a-puzzle, Love-in-a-tangle, Ragged Lady, St Catherine's Flower.