Blueberries grow on low creeping shrubs or tall erect bushes, depending upon variety. The small round berries can range in size from 5-16 millimeters in diameter. They first appear green, but ripen into a deep shade of dusty blue. The soft, hazy white coating that develops on the skins' surface, which is known as the bloom, is a natural waterproofing which helps protect the berries from the sun and other natural elements. Blueberries have a sweet and woodsy flavor with an acidity that can vary depending upon growing conditions. Long sunny days and warm temperatures develop a higher sugar content, while cooler temperatures and shorter days with limited sunlight increase acidity. After harvest some plants lose their leaves while other varieties retain their foliage year-round, becoming a colorful mix bronze, red and purple in the autumn.
Blueberries are available year-round with a peak season in the summer.