OPUNTIA

This is a very valuable edible used as a vegetable, with many medicinal properties. One of them is amazing affect on diabetes, people who regularly use this vegetable in their diet claim they were able to get rid of this illness. Stir fry or saute with some onions, garlic, etc.
Prickly Pear is fast-growing desert plant with showy bright red flowers. Drought tolerant, but also doesn't mind Florida rains. It will grow in neglect and pretty much any conditions. Perfect for easy landscaping.