Every year I try a few new edibles, and I try to lean toward perennials. I have a lot of edible perennials in the spring but very few that produce in hot weather, so I’m especially interested in any heat-tolerant edible. This spring I read about canna lilies as a multi-purpose edible, with young leaves, rhizomes, and flowers all edible. I have seen them perennialized in my area, they tolerate heat beautifully, and I grew up in Louisiana and still have a taste for overblown tropical flowers, so putting in a canna patch was a natural. They grew well and were very pretty, and didn’t even need that much water since they were well mulched.
The hitch came in the kitchen. I tried young tightly rolled leaves sliced on salads, flower petals on top of salads, and finally the season’s new rhizomes boiled. In all three cases the problem was that there was no objectionable flavor but also no desirable flavor. Cannas taste as much like nothing at all as it’s possible to imagine. Since I don’t know of any pressing nutritional reason to eat them, and since yield is low and they use up a fair amount of space, I doubt that I will try them again. I imagined that my goat would enjoy the leafy adult stalks, but to my astonishment she won’t touch them.
So, overall, no reason to keep growing them except that they’re pretty and can make a dramatic addition to summer flowers. And this leads to a bit of ranting about the concept of permaculture. I have recently perused with interest a book claiming that permaculture could help feed a rapidly expanding world population in an environmentally sound way, but the picture of the authors’ market display shows nothing but standard annual vegetables. Another book which purports to be a permaculture cookbook has recipes based almost entirely on standard annual vegetables. If you hope to eat something other than asparagus and spring greens, what exactly do you grow? My weed patch is a partial answer to this question in my own yard, and I’m experimenting with a few Japanese and Andean perennial edibles (so far without much success.) Fruit is an obvious possibility but many of us have weight or blood sugar issues and need to limit the amount of fruit we eat. So in my view the question remains unanswered, and I will be growing and eating annual vegetables for the foreseeable future. I’m also interested in the concept of wild-crafting, and in my case this means that I attempt to grow edible perennial weeds in my own yard, where I can control soil and moisture and not worry about overharvesting in the wild.
In springtime, the asparagus springs up, nettles and a host of other wild greens sprout, and I can feel like a real permaculturist for the entire month of April. After that, it gets a lot more limited and I’m a more traditional gardener. Unfortunately, canna lilies are not going to do anything to change that.