Why are there some white spots on my blackberries?
Some of my cultivated blackberries will have whiteish seed/pulp pieces among the ripe, black ones. What is causing this?
Certified GKH Gardening Expert
It sounds like white drupelet disorder, which is common in both raspberries and blackberries. Here is more information: https://www.gardeningknowhow.com/edible/fruits/raspberry/white-drupelet-syndrome.htm