Long arching prickly stems root where they touch the ground. Seed spread in bird droppings, mean they can appear in most places, usually from below hedgerows, shrubs and trees where the birds perch. The mature plant stems can reach 3 metres, with about four or five arising from a root. The picture includes a seedling showing the immature leaves, older leaves have three to five, oval toothed leaflets with prickles on the back of the petiole and centre vein. They are arranged alternately on the thorny stem. The backward facing thorns are the means by which the stems cling on as they grow through bushes and trees - and ruin many knitted swetters!
The leaves contain tannins giving them astringent, antiseptic and antifungal properties. They can be made into a fragrant tea which can be taken for coughs, colds and flu.

The white, pink or purple flowers appear from May to September on second year stems which die back later after the ripe purple-black berries follow from September to October.
Tradition has it that you should not pick the fruit after Old Michaelmas Day (October 10th) as the Devil stamps or spits on them. Apparently he was angered when he fell from heaven onto some brambles and ever since has cursed the fruit on that day.

The roots can regenerate if the main clump is removed, continual pulling or close mowing will kill them eventually.
Use a stronger concentration of a systemic herbicide, eg. Gylphosate, or a selective herbicide for use as a brush killer, eg. SBK Brushkiller.