Edible Flowers: Which are Safe?

Every year I see edible flowers used for decoration, salads and pickles. How do I know which ones are safe to grow and eat from my own garden? What about sprouts? I am tired of bean and alfalfa but where do I buy organic seed in bulk?

Susan Belsinger's wonderful book, "Flowers in the Kitchen," shows how to use 50 edible flowers, including calendula, daylily, lavender, nasturtium, squash blossom and pansy. The book discusses using flowers both visual appeal and flavour. The book has divine recipes and sumptuous colour photos. It's available from Richters.
If you want to get more adventurous with sprouts try the different mustards, curled cress (also known as peppergrass), cornsalad and even basil. Our current lots of these varieties are not organic. You might try your local health food store for bulk organic sprouting seeds.