The Washington Post's Energy & Environment section raises today the question of whether the best way to control certain invasive species is to eat them
. The biggest success story on this front in the U.S. has been the lionfish; it destroys the habitat of some other fish in the areas where it's been introduced, but it turns out to be a palatable food fish, too. Its population has gone down since the start of a concerted effort to encourage it as a food, rather than just a nuisance. The article touches on invasive species of fish and crustaceans, but also land animals and plants. I know that garlic mustard
(widespread in eastern U.S. forests) is tasty, and so are the blackberries all over Seattle.