The Q&A Archives: Sour Blueberries

Question: We have five beautiful blueberry bushes. They are all about fifteen years old. They look healthy and every year they have a profuse amount of blueberries on them. Unfortunately the blueberries are rather sour despite their obvious ripeness. Is there anything that we can do to change this?

Answer: To a large extent, flavor is related to variety you are growing. Some are simply sweeter than others which is perhaps less important if you are using the berries to make jam or pie filling when you can correct the sweetness, as opposed to fresh eating. Ripeness is also a factor and if they are sour there is a chance they are still not quite ripe, even if they have already darkened and seem a bit soft. That is when you would begin the "taste test" for ripening. Another indicator is that the birds will begin to harvest them -- they seem to know when the berries are approaching peak ripeness and steal them just as they are becoming ready to pick.

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