Posted: 27/04/2012 at 11:31
I'm no expert but I used to have a hard and fast rule in my garden if it couldn't survive only being watered once a week in summer it tended not to get planeted again ( I do take a bit more interest in my garden these days and spend a bit more time in there!)
I found Lavenders, sage, rosemary, thyme and Fushias (?spelling?) seemed to do really well, the herbs also smell really nice on a summers evening which might be nice if you have any residents who have problems with their sight.
hope it helps, not very original I know!