Can anyone tell me what I'm doing wrong. I sow parsley, coriander, rocket and a variety of salad leaves throughout the year but most of them germinate and then don't grow over about 1cm high. The time of year doesn't seem to make a difference, I've tried them from spring until now, shallow and deep pots, different composts, I've tried shade and sun in fact all of the usual remedies/ideas - and the seeds were bought fresh this year. I currently have mizuna and coriander on the kitchen windowsill, bit of sun but not too much and both germinated about three weeks ago but are still only about 1cm high. It's like miniature growing!! I don't want microgreens (in fact I think these are micro microgreens!) I want burgeoning parsley and rocket as I eat so much of it. I'd love to attach a photo but you'd need your glasses on to see the plants! When I go for a walk I pass a garden where the owner's parsley is overflowing outside, it's about 18inches high and there's loads of it. What am I doing wrong guys, please help.