The home guard: Police suggest 30 thorny bushes homeowners could plant to discourage ‘lazy’ garden thieves
Buy Pyracantha coccinea Red Column (Red Firethorn) in the UK
Security-Protecting Your Home With Defensive Bushes [and trees!]
thorny shrubs/bushes/plants/etc under windows to deter intruders. This is what we are going to do when we buy a house.
Boxwoods or other evergreens alternated with pops of color (heuchera, trailing rosemary, phlox, etc)
The Generous Gardener - very disease resistant, strong fragrance, award winning climber, repeat flowering
How to Landscape with Barberry Plants | Home Guides | SF Gate
Red-leafed Japanese barberry