Happy birthday Alan-may suggest you stay in on Friday evenings and watch BBC2-there is a plethora of all things herbacious and whilst Morty is doing the ironing or performing some other useful task alan Titchmarsh and Monty Don will avail you of all sorts of gardening tips and hints. Watch it for as long as I have and you will be able to identify not only that a plant is a plant but that it is invariably able to thrive in a soil type completely opposite to that in your garden. Plants are completely selfish in that way. Sod em all hail concrete thats what I say!