have a green thumb

(noun) someone who is very good at gardening

Example Sentences:

A: Your flowers are beautiful!
B: Thanks, it’s kind of my hobby!
A: Wow, I wish I had a green thumb like you!

Grace doesn’t have a green thumb, which is why her houseplants are all dead.

From the Blogs:

Does everything grow better in my neighbor’s yard? -- Green Thumb Sunday

Media:

Similar idioms:

1. money doesn’t grow on trees
2. give someone the green light
3. dead on one’s feet
4. green