KJV:
For afore the harvest, when the bud is perfect, and the sour grape is ripening in the flower, he shall both cut off the sprigs with pruning hooks, and take away and cut down the branches.
NASB:
For before the harvest, as soon as the bud blossoms And the flower becomes a ripening grape, Then He will cut off the sprigs with pruning knives And remove and cut away the spreading branches.