Windchill does not affect trees actual temp is the measure , wind chill can and does desiccate trees but windchill only affects objects with internal heat and speeds the removal of heat but will not lower temps lower than actual temp
Hardiness is all about actual temps , Most of the windchill hype you hear on the local weather is about selling the fear , although -20 windchill is nasty
Not too worried on temps yet , lots of research has been done and most points to sudden changes to extremes example few years ago fairly warm stretch then sudden drop off trees were not hardened enough and we lost some young honeycrisp the top died back tree resprouted above graft union we let em go and they recovered lost a year of progress . We have never had massive damage other than those young honeycrisp that year , we lose a few every year to something but I cant blame temps completely . Lowest we have been -23 this year and the trees were hardened well beforeHow cold did you get? And concerns on those zone 4 trees?
We must have some cold pockets in my area. I did not believe that thermometer, but a friend had a -29 cold pocket on his car thermometer at 8:30 the same morning.
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Sandbur did you ever find or try a prairie magic , I see jungs seed catalog has them in their line up again may be just the ticket for the tundraHow cold did you get? And concerns on those zone 4 trees?
We must have some cold pockets in my area. I did not believe that thermometer, but a friend had a -29 cold pocket on his car thermometer at 8:30 the same morning.
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Sandbur did you ever find or try a prairie magic , I see jungs seed catalog has them in their line up again may be just the ticket for the tundra
I have a few varieties that are seeing their first -30's. I don't think we have had those lows in 3 years so it will be interesting. I also have some that had severe winter kill in their first winter 4 years ago and have turned into nice trees since. I am hoping they will fair better than their first winter out of the nursery. They are also incased in 3' of snow so the roots should be fine.Is anyone else concerned about their fruit trees (or chestnuts if you tried them)?
I have quite a few zone 4 trees planted and I reached -34 plus wind this weekend.
Might be a good test year!
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I have a few varieties that are seeing their first -30's. I don't think we have had those lows in 3 years so it will be interesting. I also have some that had severe winter kill in their first winter 4 years ago and have turned into nice trees since. I am hoping they will fair better than their first winter out of the nursery. They are also incased in 3' of snow so the roots should be fine.