i have no problems with any other herbs but have been unable to get parsley to grow for several years now. i've tried growing it from seed and did really well at the beginning but as with bought plants they die after producing a handful of leaves. i grow them in pots in multipurpose compost and keep them moist at all times. they are out in the garden in full sun (when we get some) but we have had a lot of rain so far this year. Could they be suffering from too much water? Advice would be much appreciated!