Blue berry bushs
I have 2 blueberry bushs that are 4 years old. This year they had tons of berries but did not turn blue evidently falling off .....?......
Certified GKH Gardening Expert
Fruit drop can be due to environmental issues, watering, disease, pests, poor pollination, or the plants naturally thinning themselves.
This link will help refresh you on the care requirements and help you pinpoint the cause.