Instead, Duncan came back for more. He seems to like the taste. Now I'll be forced to stand guard over the shrubbery with a water pistol or leap from the house flinging pop cans filled with pennies. Dignity and dogs do not mix. Brittle plants and dogs don't mix.
Irises are brittle.
Plus, daylilies can be used to make impromptu dog confetti and still come back for more the following spring. You cannot have too many. For when you're really desperate. Lamium - Flowering groundcover that can't be beat. Rampant yet pleasant.