green fingers
A figurative trait attributed to someone who is a skilled gardener. Primarily heard in UK, Australia. My mom can keep any plant alive, even ones that I've nearly killed—she seriously has green fingers.
ˌgreen ˈfingers
(British English) (American English a ˌgreen ˈthumb) if you have green fingers, you are good at making plants grow: I do envy you your green fingers. Your garden always looks so beautiful.