One of the most environmentally friendly forms of perimeter security is vegetation. There are many shrubs that could fall into the category of security planting. Pyracantha and hawthorn are just two. Choosing the best planting is dependent on soil and climate as well as density and growth rate.
Pyracantha is an attractive, evergreen, bushy dense shrub. It is frost hardy and capable of growing in just about any soil in sun or semi-shade. Pyracantha is fast growing, averaging 30-60cm a year ranging from one to three meters high dependent on cultivar. It has narrow oblong leaves – bears clusters of white flowers in early summer followed by red, orange or yellow fruits in early autumn.
Pyracantha is an excellent evergreen shrub for security hedging due to its density, sharp thorns, hardiness and ability to grow relatively quickly in most conditions.
It needs to be noted that dense hedging can offer protection to potential intruders in the form of visual screening or a place to hide equipment. It can also interfere with detection systems and would need management to ensure that it does not generate nuisance alarms.