hmm chris if they are that horrible i might not grow them either, wish my scotch bonnents had done better, realy was disappointed they never. anyone that does curry should do coriander, so easy and it means you allways have some at hand. canny count the times i had to head back to the supermarket because the only thing missing for a curry was coriander.
i had a rectangle pot of herbs as well, parsley grew amazing and chives and thyme and rosemary.
also grew tomatoes, did terrible in outside pot, spring onion, just now harvesting them and pretty decent too. beetroot was poor though realy my fault in neglecting them