May is often a month when people plant flowers or vegetable gardens, so today’s idiom is:
Eric’s flower garden is the best in the neighborhood. He must have a green thumb.
This idiom means: a talent for growing things
This idiom has several different possible origins; most having to do with the green of plants rubbing off on a person’s hands if they spend a lot of time with plants.
- Remember the /b/ at the end of thumb is silent