To have a green thumb
Another theory is that it came about during the time of King Edward I. He liked green peas so much that he employed half a dozen serfs just to shell them during harvest time. The serf who shelled the most peas was declared to have the “greenest thumb” and won a prize.
Jack has a green thumb so his garden always looks beautiful.
You have such a green thumb! You must share your gardening secrets with me!
I don’t have a green thumb, so I need to take extra care when watering my house plants.