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- Nov 12, 2005
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Since you have applied a spray on the grapes, I wouldn't rush to get rid of infected clusters. Chances are good the affected berries will dry, shrivel and fall off, leaving the good grapes. Those clusters may be missing a few berries, but they look good and full to begin with. For being so sick most of the summer, you are doing great taking care of them.
When you pruned heavily, I said they would branch back out. It's a juggling act pruning them to thin. Too early and they bush out and must be pruned again. Too late and you get so much shade it affects production ripening and bud development for next year. Thin them out as you can. I try especially with Frontenac to break the summer laterals out while about a foot or so long. It is much quicker and effective than having to clip each one with the pruning shears.
When you pruned heavily, I said they would branch back out. It's a juggling act pruning them to thin. Too early and they bush out and must be pruned again. Too late and you get so much shade it affects production ripening and bud development for next year. Thin them out as you can. I try especially with Frontenac to break the summer laterals out while about a foot or so long. It is much quicker and effective than having to clip each one with the pruning shears.