There are a number that do well in our climate once established, such as asparagus, artichokes, rhubarb, horseradish and watercress.
There are others that are often grown as annuals but will return in our mild climate and can be grown as perennials such as kale, garlic and radicchio.
It may take a little work to get some of them going, such as asparagus, but you will be rewarded with many years of fresh vegetables from the same plants year in and year out. And just think how unique you will be with your homemade horseradish sauce to share with your friends instead of salsa or zucchini bread!