Raised beds are good for growing almost anything.Because with a raised bed you can easily customize your soil to your needs. Flowers like petunia ,perennial hibiscus,profusion zinnias,globe amaranth and vegetables like onions ,tomatoes , potatoes are just some of the crops that will grow well in a raised bed. According to ‘In the backyards’ (
http://inthebackyard.ca/ ) who helped me to build a raised garden bed in our home), with careful planning you can also have success with growing a wide variety of plants.