This lovely flower can be a monumental pest if it finds its way into garden borders. It belongs to the convolvulus family, and comes in several varieties, some of which have smaller pink and white striped trumpets. This, I think, is hedge bindweed, Calystegia sepium and it is presently spreading beside the field path. Like its cousins, its plant-strangling capacity knows no bounds, and if you try to dig it up and leave the tiniest scrap of the plant behind, in an eye’s blink, you will have a brand new bindweed. Or maybe several.
Richard Mabey in Flora Britannica suggests that some of its many vernacular names reflect the degree of horticultural nuisance. Snake’s meat and Devil’s guts are certainly blunt expressions of gardener antipathy. But there are picturesque names too. E.g. Lady-jump-out-of-bed, and Granny-jumps-out-of-bed seem to derive from a children’s game: ‘Grandmother, grandmother, pop out of bed’ a refrain chanted while pinching out the base of the flower and watching the trumpet float to the ground like an old-fashioned nightgown on the loose. Sometimes the Grandmother is a Nanny Goat. There is also: Lazy Maisy jumps out of bed.
Other imaginative names include Old Man’s Nightcap, Poor Man’s Lily, White Witch’s Hat, Bridal Gown and Belle of the Ball, and then there are numerous variations of bindweed: Barbine, Bellbind, Withywind, Waywind.
When it comes to eradication, the Royal Horticultural Society does not hold out much hope for simply digging it out. Chemicals seem the only answer, but they do suggest a method of damage limitation, glyphosate-wise. This involves sticking garden canes into the soil near any bindweed eruption, thereby encouraging it to grow up the cane. Later you can unwind it onto bare soil and spot-treat it without harming other plants.
Or you could just live with it, and try to keep it under control. I have the hedge variety in the guerrilla garden. It keeps winding up the crab apple tree, and I keep hoiking it out. I also have the smaller pink and white striped ground-creeping variety in several places on my allotment plot. This is field bindweed or Convolvulus arvensis and I’ve become quite adept at digging it out, which checks it, but does not remove it entirely. At the moment it is also in flower and really very pretty. So I guess it will be staying. For now.