Money doesn't grow on trees Informal

Money is a limited resource that must be earned through effort, not something that appears freely or without cost.

It’s most often said as a corrective, especially by parents to children who ask for money or purchases without appreciating what it costs to earn it.

The phrase works through a simple negation of an impossible image: unlike fruit, money cannot simply be grown and harvested, so anyone who spends carelessly, as if new money would always appear, is being reminded of a basic economic reality. Reference sources describe it as a common parental admonition that became especially widespread in the early 19th century, a period of expanding industrial wage labor when children’s growing exposure to store-bought goods and cash allowances made this kind of reminder newly relevant in a way it may not have been in earlier, more self-sufficient agrarian households. As with many such stock parental phrases, its exact first appearance in print is hard to pin to one source, since it likely spread through spoken, everyday admonition long before anyone wrote it down.

Turn off the lights when you leave — money doesn’t grow on trees, you know.

He finally understood that money doesn’t grow on trees once he started paying his own bills.

Stop asking for the latest phone every year; money doesn’t grow on trees.

A: Can I get a new bike this weekend? B: Money doesn’t grow on trees, sweetheart.