window box

US /ˈwɪn.doʊ ˌbɑːks/
UK /ˈwɪn.doʊ ˌbɑːks/
"window box" picture
1.

jardinera, macetero de ventana

a long, narrow container for growing plants, typically placed on a windowsill or attached to the outside of a window

:
She filled the window box with colorful petunias.
Ella llenó la jardinera con petunias coloridas.
The old building had charming window boxes overflowing with geraniums.
El edificio antiguo tenía encantadoras jardineras rebosantes de geranios.