I'm glad you mentioned freesias, because I'd like to encourage gardeners to try these beautiful plants. I planted dozens 1 to 2 inches deep in well-draining loam. In March and April they have provided mixed color in many spots in our garden. Ideally, these corms should get good morning sun. And, yes, they like the cooler parts of the year.
Some varieties naturalize.
Those that don't just can't take our hot, humid summer. In fact, once in a while, I would pick a leaf and eat it for its peppery taste. In Houston we never see them advertised or part of anyone's flower garden. Nasturtiums, which are members of the caper family, are edible, too. Remember, if you are going to eat any part of the nasturtium, do not spray or dust it with insecticides.