I know I should not laugh ;D about this as we have all been there and started from scratch, but one of the new ladies has a very big greenhouse and in it she has 3 growbags all with three little squares cut, very neatly, out and in each square she has a lovely weed growing, although she does have three poppies in one of them lol. The beauty of the bunch is a very healthy looking dock growing in a plant pot all by its self :P ::) ;D.
So if you do find a site I might recommend it to her.
Rosemary