If you squeeze the sides of a snapdragon blossom, it opens its little mouth and says “rawr rawr.” Or maybe that’s me. These flowers are edible, though flavor ranges from bland to bitter. Probably best as a garnish. In Missouri, the plant will stay green through November.
It seems a shame to relegate food plants to second place in the garden. They aren’t as tidy as ornamentals, but they were bred to produce bountiful crops, but they can also look very good, and many of them can fit in well in a mixed border.