North Alabama even got some light frost! And all across the central regions of Alabama, the words "record low maximum temperatures" were uttered. I'm +40 years old -- never heard that before and had to think twice what the hell they were talking about. What it means is it is dang cold here with highs more typical for the first week of March than the first week of May. I think we reached a cloudy, cool and at times, rainy, 59-60 degrees both Saturday and Sunday. We have already seen 85+ degrees with 78-80 being normal. This cool weather will get your attention.
I don't know about blackberries, but the blueberry bushes are in full bloom, and some birds have already raised and fledged the first nest of youngsters. And the potatoes?