Amorphophallus Species, Kyushu Voodoo Lily, Voodoo Lily

The fastest growing, tallest amorphophallus yet, for my Baton Rouge, LA 8b area. We bought the corm in the produce section of an Indian...Read More grocery store in Ireland one evening when we ducked in to escape the rain. I routinely scan the tubers/corms/roots area of food stores that are atypical ( to me) and commonly plant the one's I don't recognize, to see what will happen. In this case I thought it was probably an aroid and expected konjac so was quite surprised at its mellow green and white splotched stem/trunk, quite delighted at its konjac-like, malodorous flower and tickled pink at the color changing display of its seeds.
Is its corm edible? -as its found location suggests?

This is a new one for me, I like it because its green and white, unlike konjac. Does this one bloom every year?