Posted: 26/02/2017 at 17:10
Quickthorn is a kind of Prunus and its fruit is Sloe. It is said to knit a hedge together because it grows quickly, suckers like mad and as it has thorns it grabs on the other shrubs in the mix. Personally I would not grow it in an urban situation because of its prickliness, unless you need an intruder proof barrier.
Same applies to Hawthorn and Pyracantha.
Any fast growing shrub will soon make a dense hedge.