Keräyjänmaker

Keräyjänmaker, also known as the common crowberry (*Empetrum nigrum*), is a low-growing evergreen shrub native to cold regions of the Northern Hemisphere. It belongs to the Ericaceae family and is commonly found in bogs, heathlands, and coniferous forests across Europe, Asia, and North America. The plant is characterized by its small, dark green, needle-like leaves and clusters of tiny, bell-shaped flowers that bloom in late summer. Its fruit, a small, dark purple to black berry, is a key food source for various wildlife species, including birds and mammals.

Keräyjänmaker has a long history of traditional use among Indigenous peoples and local communities. The berries are edible and have been consumed both fresh and dried, often used in jams, jellies, or as a flavoring agent. They possess a tart, cranberry-like taste and are rich in antioxidants, vitamins, and minerals, contributing to their nutritional value. In some regions, the plant has also been utilized for medicinal purposes, though scientific validation of its health benefits is limited.

The shrub plays an ecological role in its habitat, helping stabilize soil and providing habitat for insects and small animals. However, keräyjänmaker is sensitive to environmental changes, particularly acidification and habitat degradation, which can affect its growth and distribution. Conservation efforts often focus on protecting its natural habitats to ensure its continued presence in ecosystems.

In Finland, where the term "keräyjänmaker" is commonly used, the plant is sometimes referred to as "mustikka" (blueberry) due to its similar appearance, though it is distinct from the true blueberry (*Vaccinium* species). Its cultivation is rare, as it thrives best in wild, undisturbed conditions. Overall, keräyjänmaker remains an important yet underappreciated element of boreal and subarctic ecosystems.