Blueberries originally grew wild in North America, and in many places they still do. By 1910 there were at least two varieties being cultivated for market. Breeding and selection have made these berries popular, but wild fruit is also marketed.
Blueberries are available from early May through August, and the peak month is July. Canada and the northeastern United States produce the greatest amount of blueberries, because they grow best when the days are long and the nights cool. In any one area the blueberry season usually lasts from six to seven weeks.
Quality blueberries are plump, look fresh, clean, and dry, are fairly uniform in size, and are a deep blue, black, or purplish color. Overripe berries are dull in appearance, soft and watery, and moldy.
Therapeutic Value of the Blueberry
Blueberries contain silicon, which helps rejuvenate the pancreas. They are said to be good for diabetic conditions.
Nutrients in one pound of Blueberries
Vitamin A: 420 I.U.
Ascorbic Acid: 58mg