Meaning of the word "a hedge between keeps friendship green" in English

What does "a hedge between keeps friendship green" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

a hedge between keeps friendship green

US /ə hɛdʒ bɪˈtwiːn kiːps ˈfrɛndʃɪp ɡriːn/
UK /ə hɛdʒ bɪˈtwiːn kiːps ˈfrɛndʃɪp ɡriːn/
"a hedge between keeps friendship green" picture

Idiom

friendships are more likely to last when friends respect each other's privacy and boundaries

Example:
I don't ask her about her finances because a hedge between keeps friendship green.
They are best friends but never interfere in each other's family matters; a hedge between keeps friendship green.