cheech wizard

Probably not of much interest to people in areas colder than zone 8, but there are a lot of perennial sub-tropical food plants becoming available. So far I've located Yacon, Ajipa, Chaya, Ulluco, Chayote, Oca, Katuk, water chestnuts, Tropaeolum tuberosum, perennial beans, yams and a few others. So far I've only had bamboo and Chayote for more than a single season. The Chayote is great so far. Very productive, but a huge vine and supposedly you need two to set fruit. The vine died back when weather got cold enough, but managed to make enough tubers to regrow. The shoots, fruits and tubers are edible w/ a nice mild flavor. The older leaves go to the ducks, and I've cut up fruits for them. I'm going to wait one more year before harvesting the tubers. I'm kind of stoked about the Yacon and Chaya, but not enough experience w/ them yet. I'm hoping the Tropaeolum tuberosum will work here. I've been interested in a perennial Nasturtium for quite a while. It's grown primarily for the tubers, but can be eaten just like the annual varieties.

I'd be interested if anyone has run across other perennial low maintenance vegetables also.