has a green thumb

Has a green thumb is an idiom used when describing someone who seems to be naturally talented in gardening and caring for flowers and plants. To have a green thumb means you are able to tend to your vegetable and herb garden, flowers, plants and other greenery with care and concentration and these plants will thrive under your care. The opposite of a green thumb is known as a black thumb in which the person seems to kill nearly all of their plants and dont understand how to properly care for them.