They will be like a vine stripped of its unripe grapes, like an olive tree shedding its blossoms.
NIV
He shall fail to bring his grapes to maturity [leaving them to wither unnourished] on the vine and shall cast off blossoms [and fail to bring forth fruit] like the olive tree.
AMP
He shall shake off his unripe grape as the vine, and shall cast off his flower as the olive.
KJV