...the ground i've ..? just dumped a few bags of organic seedling soil onto an existing garden bed that had mulch on top (about a year old). that the mulch was not organic and at worst that it could have been dyed to make it look really black. the seedlings should have a soil depth of 15 cms but i reckon that the tipped out bags are about 10 cms high after i spread them out a bit. two weeks later they're growing ok . but now i'm worried about how they'll turn out and if they do will they be safe to eat?? i've got tomatoes, onions and rainbow chard. help please.