A few horrible tasting blackberries
I've bee growing blackberries for a few years. We've always had wild ones in the woods, and then I started with a couple Chester's. Then I put in some Triple Crowns, Doyles, and others. For the most part, all is well... huge, tasty, juicy berries. Yum!
But... I have a problem. With my Triple Crowns and Doyles, perhaps 1 out of 30 of them have an absolutely terrible taste. The taste is so bad, that once a visitor has one of those, they are literally afraid to have another one and simply won't do it. These berries look like any other ripe blackberry with no other visual indication of what is to come.
I don't believe this is a case of them simply being over ripe, as 1.) They don't look overripe. 2.) I'm picking the berries carefully every day. 3.) The taste is for more awful than it simply being over ripe. 4.) I don't think I've ever had the problems with my Chester's.
I asked about this problem last year, and someone suggested that I might have eaten a stink bug. But, I'm now more carefully examining the berries, and it's happened often enough that I'm pretty sure that's not the case (unless he's inside or something). The once or twice I've gotten a look at the inside of the bad berry, I haven't noticed anything out of the ordinary.
Does anyone have any idea of what could be going on here? Some sort of disease? Or some other insect inside that's corrupted the berry?