Allowing the plant to mature prevents.
If your blueberry flowers are turning brown and falling off, you don’t have to worry as long as they leave behind green developing fruit. However, when entire flowers, plus the stem, turn brown and fall off, the plant is likely stressed because it lacks sufficient water or has blossom blight.
The flowers fall off and the little bit that is left behind becomes the berry. Birds pull the white flower petals from my blueberry bushes. It's like they know instinctually, in doing so, the blueberries will grow and ripen sooner.
I've seen many species of birds doing this. Blueberry Flowers Turning Brown and Falling Off Pre Pollination Browning. Blueberry flowers turning brown before pollination are typically suffering from fungal Mid Development Browning. Temperatures of below 28°F (-2°C) are low enough to cause freeze injury to some blueberry Post Pollination Estimated Reading Time: 7 mins.
May 11, I began growing blueberries in a raised bed last autumn, I was looking forward to a fair amount of fruit despite my young bushes.
But now it seems a good half of my flowers have fallen off, I’m not sure if this a problem or completely normal.