Oregon,Washington and Idaho grape growing areas got some real cold weather this week, -15 around Patterson Washington, and 0 in western Idaho. Have any of you heard any damage assessments? Here in western Idaho we had pretty good snow cover and own rooted vines so the worst will probably be retraining the vines for a year. Interested in any information as I haven't been through this before.
deep freeze in the NW- projected damage?
Jan 06, 2004
1 Replies
Hi Darwin
0F shouldn't be a problem with most vinifera since they have had time to harden. However -15F (-26C) will definitely kill a percentage of buds and arms depending on the variety. Also some weaker and younger trunks will be damaged which will then make them susceptible to crown gall. Bottom line you will likely have to retrain many new trunks next year and this is a real pain since it gets in the way of typical operations. Much depends on the condition of the vines as they go into winter (mildew damage, overcropping issues, time to harden ....)Here is an article on Ontario's experience last year:
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Joe
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