Security hedges will often perform similar functions as boundary hedging but with a greater priority placed in keeping out intruders. While many species will provide security, hedging plants with thorns will always be the most effective deterrent. While they are undoubtedly more hostile many of these hedge plants may also provide a beautiful living tapestry of colour for much of the year.
Faster growing evergreen security hedging plants include Pyracantha, Berberis, Stenophylia and hollies will also make an excellent prickly hedge albeit more slowly. Suitable deciduous hedging species include Quickthorn, Blackthorn and most Roses. A mixture of plants can be effective, Hornbeam and Quickthorn which combined are prickly and leaf retaining for winter.