Posted: 17/02/2014 at 19:16
Have a look and see if water is accumulating anywhere - if it is don't plant your Mediterranean herbs, rosemary, thyme, oregano etc, in that spot. They all need good drainage so make a Mediterranean area and dig in lots of grit and they should be fine.
I had to move my rosemary last winter as our newly paved terrace spilled water onto that area - the rosemary and bay are now in terracotta pots on the terrace behind the herb bed. Now I've noticed that the thyme and oregano are also getting the run off from the terrace - I'm going to lift them and put them in a stone trough (with lots of grit and a loam-based compost) - they'll be happier there.