The second annual National Heirloom Exposition took place in Santa Rosa on September 10-12. It was a celebration of the imperfect, the unexpected, and many people attending it learned that sometimes the most blemished fruit has the sweetest flavor. There were squash with warts, spiky cucumbers and “Cannibal” tomatoes. A display showed off Hopi Blue corn, Rainbow Inca corn, and Seneca Blue Bear Dance corn. Genetically modified corn, well, it was not welcome at the table.