01/12/2021
Calystegia sepium
Calystegia sepium (hedge bindw**d, Rutland beauty, bugle vine, heavenly trumpets, bellbind, granny-pop-out-of-bed and many others) is a species of flowering plant in the family Convolvulaceae. It has a subcosmopolitan distribution throughout temperate regions of the North and South hemispheres.
It is an herbaceous perennial that twines around other plants, in a counter-clockwise direction, to a height of up to 2–4 m (6 ft 7 in–13 ft 1 in) m, rarely 5 m. The pale matte green leaves are arranged spirally, simple, pointed at the tip and are arrowhead shaped, 5–10 cm long and 3–7 cm broad.[2]
The flowers are white, or pale pink with five darker stripes, produced from late spring to the end of summer. In the UK, between July and September.[3] In the bud, they are covered by large green but tinged with crimson bracts which remain but scarcely overlap and do not cover the sepals of the open flower.[4]: 567 The open flowers are trumpet-shaped, 3–7 cm diameter, white, or pale pink with white stripes. After flowering, the fruit develops as an almost spherical capsule, which is hidden by the bracts. It is 1 cm in diameter, containing two to four large, dark brown,[3] or black seeds that are shaped like quartered oranges.
The plant thrives in hedges,[3] fields, borders, roadsides and open woods. Other vernacular names include greater bindw**d, bearbind, hedge convolvulus, hooded bindw**d, old man's nightcap, wild morning glory, bride's gown, wedlock (referring to the white gown-like flowers and the binding nature of the vine), white witches hat, belle of the ball,[5] devil's guts and hedgebell.[6] A common childhood pastime in the UK is to 'pop' the flowers from the sepals while chanting "Granny, granny — pop out of bed".