New Revised Standard Version
They will shake off their unripe grape, like the vine, and cast off their blossoms, like the olive tree.

Contemporary English Version
Or like vineyards or orchards whose blossoms and unripe fruit drop to the ground.

New American Bible
He shall be like a vine that sheds its grapes unripened, like an olive tree casting off its blossom.

Douay-Rheims Bible
He shall be blasted as a vine when its grapes are in the first flower, and as an olive tree that casteth its flower.

He shall be blasted as a vine when its grapes are in the first flower, and as an olive tree that casteth its flower.

shake off

Isaiah 33:9 The land hath mourned, and languished: Libanus is confounded, and become foul, and Saron is become as a desert: and Basan and Carmel are shaken.

Revelation 6:13 And the stars from heaven fell upon the earth, as the fig tree casteth its green figs when it is shaken by a great wind.

and

Deuteronomy 28:39,40 Thou shalt plant a vineyard, and dig it, and shalt not drink the wine, nor gather any thing thereof: because it shall be wasted with worms. . . .