I thought you might be interested to read that I'm not the only one out there who regularly eats flowers in her salads - Gem's mum eats more than I do:-)
I, too, have Jerusalem artichokes, lovely and nutty flavour. They grow five or six feet tall, so only plant at the back of borders, unless you actually want them to provide shade! Mine are behind the potatoes, but Gem's mum is really not into vegetables, so I won't talk about them.
I regularly eat nasturtium flowers and leaves, chives flowers and leaves, fennel leaves and seeds, rocket leaves, flowers and seed pods, beautiful purple spinach, grown for beauty as well as flavour, bay, thyme, marjoram, rosemary, lavender flowers, marigolds flowers, land cress leaves and so on ...
A (Mostly) Vegetable-Free Edible Garden by Gem – ooffoo.com