Folklore in the United Kingdom and Ireland tells that blackberries should not be picked after Old Michaelmas Day (11 October) as the devil (or a Púca) has made them unfit to eat by stepping, spitting or fouling on them.
Latin name: Rubus Fructicosus
Folk name: Bramble, Bumblekites, Bounty Thorn, Skaldberry, Blackbutters, Pricklethorn
Habitat: Waste ground, hedgerow, woodland edge
Part Used: Fruit, leaves, stem and bark
Medicinal Use: Used to treat mouth ulcers, sore throat, diarrheoa and thrush. Fruit high in vitamin C.
Wikipedia Link: https://en.wikipedia.org/wiki/Blackberry>