My blackberries are doing the same thing as yours and have been watering too because of the heat and no rain--just figured it was the same bad luck I've had in the last month--shingles on my face and computer blown up in a lightning storm. I survived the last two so guess I can buy some blackberries and make my blackberry/apple pie that I'm craving. Also make a cobbler with rhubarb, raspberries and blackberries--MMMM!