el olmo

No puedes pedir peras a un olmo.

You can't get blood from a stone.

Hacer hablar a la tímida Kyoko en una fiesta es como pedirle peras al olmo.

Getting the shy Kyoko to speak at a party is like asking for the impossible.

No se pueden pedir peras a un olmo.

You can't get blood from a stone.

No le pidas peras al olmo.

Don't ask for pears from an elm tree.

Plantamos el olmo del patio en tu honor.

We planted the elm tree in the courtyard in your honor.

— Picnic (1955)