I have thousands of wild blueberries the low and high bush. I rarely ever pick the low bush..and when I say thousands I am not joking. Anyway, I pick blueberries every year but for the last 3 years they have not produced much at all..last year there was some, but the year before that there was none, and this year there are none, and there is no way that I can fertilize or prune etc. as they are in the woods. Of course there are thousands of them, so imagine that task and cost...I was wondering, do they go dormant at times for a few years? We had a pretty cold winter and there has been plenty of rain and sun this spring summer and plenty of bees around There were a lot of green berries but then nothing - no blue ones and no green ones either. Where did the green ones go? Thanks for any help. Bonnie
Weather, sunlight, disease or even birds and pests can be reasons that you are not seeing berries.
You can talk with your County Extension Office to see if they have weather reports on other crops in your area; you mention some weather extremes.