Translation of "Weed" in Spanish

Some members of Tatoeba undoubtedly smoke too much weed.

Algunos miembros de Tatoeba consumen demasiada hierba.

- Do you think that you could help me weed the garden this afternoon?
- Do you think you could help me weed the garden this afternoon?

¿Crees que me podrías ayudar esta tarde a podar el jardín?

Or a like a weed growing through the cracks in the pavement

O una especie de hierba que aparece entre las grietas del cemento