Bilberries are found in acidic, nutrient-poor soils throughout the temperate and subarctic regions of the world. They are difficult to grow and the fruit is small, so they are seldom cultivated. Fruits are mostly collected from wild plants growing on publicly accessible lands throughout northern and central Europe, where they are plentiful – for example, up to a fifth (17–21%) of the land area of Sweden contains bilberry bushes, where it is called blåbär (lit. "blueberry", which is a source of confusion with the American blueberry). Bilberries can be picked by a berry-picking rake like lingonberries, but are more susceptible to damage. They are softer and juicier than blueberries, making them difficult to transport. Because of these factors, fresh bilberries are only available from markets and gourmet stores. Frozen bilberries, however, are available all year round in many parts of Europe.