Frost Damage

Some area in NW PA and great lake (Detroit etc.) had some recent frost damage (~28F). Here is the grape vines:

It looks bad. I do not know if there would be any harvest this year. If yes, how much, 50%?

Wow, that looks really bad! I really have no idea if that means a complete loss for this year, or whether the vines will put out new shoots that flower a few weeks later than normal. If they do put out new shoots and flowers, then ripening would obviously be delayed, so fall weather would have a big impact on the crop, with later varieties suffering more than earlier varieties.

Hope you get 100% but it looks like a heavy loss 10%.

Sorry about you frost damage. In my area we are a long way from frost. Our lows are between 65-75%. We complain about a few insect pest without regard to how other areas can still have almost total losses due to low temperatures. Bill

No, this is not my damage. My night temp over last week was about 45F to 50F.

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I think this happens in mountain regions where the temp fluctuation can be large. Quite a few fruit tree varieties are subject to last frost damage.

This is what happens to both asian and european plums at 28°F.

It looks like apples did OK and possibly the peaches. I haven’t been out to pears I have in a remote location. I think you have to worry when the temps dip below 30°F after pollination.

Yup, that’s pretty much what my plums looked like after our 28 degree morning March 29th. The freeze didn’t even last long. The peaches, apples and pears fared much better, either because of location, stage of development, or because maybe they are less susceptible. Even some plums that looked unharmed dropped a few days later.

Muddy you fared better then I did. I lost all of my peaches, plums, and pluots,
and about 100 grafts.

I think the damage shown at the original photo was very recent, probably in mid May…

Ouch! I’d have been more than sad if that happened, except for the grafts. For that, I think there would have been a string of curse words coming from my mouth. With the lost fruit, there’s still the hope that it will set extra next year and have more opportunity for growth this year. But there is no compensatory thought for losing the grafts. That’s just straight out loss.

@RedSun I understand that those grapes are farther north where it is still spring. Grapes down here are well into plumping out for ripening. We’ve been in our summer pattern this month, with temps steadily climbing hotter.