Question: I have mature highbush blueberry plants. This year there is FAR fewer berries than in the previous 26 years. I’ve also noticed that several berries (but not all) are dying before they ripen. This seems to happen when they are still white, before turning purple. Answer: Jonathan Foster, Home Horticulture Outreach Professional I’m sorry read more Why are my mature highbush blueberry plants not producing berries?