A species of deciduous shrubs from the genus Vaccinium of the Heather family. Branched deciduous semi-shrub or shrub up to one meter high, usually 30-50 cm, sometimes with a creeping stem. Unlike bilberries, the stem turns woody almost to the top.

In appearance (especially because of the similarity of the leaves) blueberries can be confused with bilberries. Blueberries differ from bilberries by lighter stems and the shape of the flower on the berry: bilberries have an even, almost round, blueberries have more broken; bilberries and blueberries also taste very different.

Blueberry juice is pale, and bilberry juice is purple-red and when picking bilberries, when they get on the skin, purple-blue, poorly washed off spots remain.

The root system is spongy. There are no root hairs. The assimilation of nutrients from the soil occurs with the help of mycorrhiza. Leaves up to 3 cm long are obovate or oblong, dense, thin. In autumn, the leaf turns red and falls off, the berry may not fall off and remain on bare branches until frost.

The flowers are small, five-toothed, drooping; the corolla is white or pinkish. Honey plant. The flowers actively secrete nectar.

The fruits are blue rounded, less often elongated, berries with a bluish bloom, juicy edible, ripe purple flesh, berries up to 1.2 cm long.

The species is very frost-resistant, the bush can live up to a hundred years.