Adam Clarke on Joel 1:12

The vine is dried up - Dr. Shaw observes that in Barbary, in the month of June, the locusts collect themselves into compact bodies a furlong or more square, and march on, eating up every thing that is green or juicy, and letting nothing escape them, whether vegetables or trees.

They destroy the pomegranate, the palm, the apple, (תפוח tappuach, the citron tree), the vine, the fig, and every tree of the field. See the note on Joe 2:2 (note).