I have 6 three year old thornless blackberry plants they are Black satin, Tripple Crown, Dirksen, and Navaho varieties. Though the Dirksens seem to do the best Last year*I had a good harvest with a bounty of big berries from all four varieties. This year has been much hotter. I live in Utah so not only the heat but super low humidity is a problem. As it becomes closer to harvest many of my leaves on my year old canes are starting to look post harvest*the berries*are ripening but each berry will have dead spots within the berry Some of the lottle balls that make up a berry will be brown, hard,*and dry.
*Am I dealing with a problem with*the heat that I can not control?
To much water/ Not enough?
Are these the simptoms of a desease of some kind?
Am I not furtilizing enough?
I am at a loss as to what to do here. Any help or experience would be great and apreciated.