Yiddish: May you grow like an onion with your head in the ground.

SOURCE: Kogos, A Dictionary of Slang & Idioms The following may be added:

... and feet in the air.   |   ... un di fis farkert.   |   .און די פֿיס פֿאַרקערט ...

SOURCE: Kumove, Words Like Arrows.

װאַקסן זאָלסטו װי אַ ציבעלע מיטן קאָפּ אין דר'ערד!

Vaksn zolstu vi a tsibele mitn kop in dr'erd!

May you grow like an onion with your head in the ground.