Why can't I grow salad leaves?
I grow flowers and veg no problem, but salad leaves never come to anything. It's been like this for years and it's annoying because the salad leaves I can't grow are a lot more expensive to buy than the onions, potatoes, beetroots, and tomatoes I grow without problems. Also, I don't like buying salad leaves - the handling, the plastic wrappers, the soggy waste if you don't use it right away.
I've tried sowing pak choi, Chinese cabbage, lettuce of various kinds, spinach. They usually produce a seedling and then stall and come to nothing. I've tried in containers on the windowsill, in a raised bed, in the greenhouse, and different times of year.
Does anyone else struggle with this or does anyone have a floolproof plan for getting salad leaves?