1) I'm not in Michigan and they're not on private property
2) Anyone can buy a dozen roses and everyone does, but roses are boring. I'm not sure what type of flowers these are, but they are more beautiful than almost any I have seen.
3) As a LEO I'm positive that nothing I've done is against the law.

If you're in Michigan take alleyyooper's advice and don't pick flowers in ditches. Take Chap's advice and get your wife a pedicure.