Perimeter hedge

Sites
http://www.hedgesdirect.co.uk/acatalog/common_hawthorn.html

http://www.ehow.com/how_5580240_grow-hawthorn-hedges.html

Indian Hawthorn
http://www.ehow.com/info_12316772_indian-hawthorn-tall-hedge.html Indian hawthorn (Rhaphiolepis umbellata and Rhaphiolepis indica) is the common name give to two closely related members of the rose family. Both are broadleaf evergreens, hardy in U.S. Department of Agriculture plant hardiness zones 8 through 10. Both can be used for hedges. Available cultivars run the gamut from short (2.5 feet tall) to much taller (8 to 10 feet). "Best" is a relative term, but several cultivars stand out for size, beauty and disease resistance

http://treesandshrubs.about.com/od/commonshrubs/p/Growing-Indian-Hawthorn-Rhaphiolepis-indica.htm Get the tall variety, 5feet is not enough in South-Africa, Bougainvillea makes a larger bush.

links
http://www.plantdatabase.co.za/crataegus_douglasii

Boxed hedging
http://www.stakehillnurseries.co.uk/48-hedging-plants The evergreen Laurel's to the much loved Hawthorn and Beech hedge plants that attract many wild bird species. The fastest growing (and most popular) hedging plant is the Leylandii. This is available in either gold or green, they can be kept pruned to keep it to your ideal height. PLEASE SELECT ONE OF THE CATEGORIES BELOW.

Bougainvillea varieties
http://www.doityourself.com/stry/knowing-the-different-bougainvillea-varieties#b

dd
Plant bougenvillas, Hawtorn etc. at 1m spacing around the farmhouse. Make cutlings directly from the bougenvillas and propagate it besides the BG bush it was taken from. top to prevent intrusion over the topl.
 * Double gates with metal spikes on the top of the gates and water canon(http://en.wikipedia.org/wiki/Water_cannon) on
 * Embed the steel gate inside concrete.

Cut a stem from the BG. Divide the stem into 25cm cutlings. Seel each cutling top with treesealer grafting compound. Using a rod and hammer make vertical hole 15cm deep. Fill with water and insert the cutling besides the BG bush from which the cutling came at spacings of 20cm. Thousands of cutlings can be made this way providing you with a thick inpenatrable bush within 2 to 3 years. There is no need to propagate cutlings under a shadenet, they can be directly propagated at the spot you wish to have a permanent BG bush.

The criminals are infiltrating estates and open streets by operating from a designated house and then jumping over the walls. Remove all the plants and propagate Kai-appel(hundreds) on both sides of the wall. If a crime situation is out of control and your neighbor will cooperate then a perimeter can be secured.