Dennis from Bridgman Mi. writes
Sencor 75% is not labelled for use on grapes or any other edibles. Hi-Yield Grass Killer is labelled for use to control grassy weeds around grapes in general, but the pre-harvest interval for that application is 50 days.
Another option would be Grass Out Max which can be used around non-bearing grape vines (no fruit for at least one year after application). Otherwise, you would need to spot-treat carefully using a non-selective herbicide such as Avenger or Axxe.
Answer last updated on: 01/18/2022