Seeds - Green Alder

For successful seedlings,
see the growing notes at the bottom of the page!

Green alder (Alnus alnobetula subsp. crispa) is a shrub that forms a dense, hardy shrub. It grows naturally in humid, open habitats and often develops several stems from the base. The leaves are a rich green in summer, then turn a beautiful yellow in the fall. In spring, it produces long catkins, followed by small brownish cones that remain on the branches.

Furthermore, alders (Alnus spp.) are recognized as keystone plants for biodiversity in many North American ecoregions, as they support a wide variety of insects and birds that rely on their leaves, seeds, and the habitats they create.

Medicinal and culinary uses
Green alder has several well-known medicinal properties. A decoction made from its bark can be used for its astringent, tonic, stomachic, hemostatic, mild emetic, diuretic, and anti-inflammatory effects.

In addition, its catkins are used as a boreal spice that is growing in popularity. With a similar appearance to pepper, this spice has a powerful fragrance that is both floral and musky. It can be used to flavour both desserts and savoury dishes.

Ecological roles
Green alder is a pioneer species that establishes easily in open or disturbed habitats, where it helps stabilize the soil. The roots form nodules associated with nitrogen-fixing bacteria, which helps enrich the soil naturally. It also provides dense shelter for small birds and a useful structure for many insects.

Green alder seeds require cold stratification to ensure germination. See the cultivation notes below for more details.

Akène cannot assume any responsibility for the use of plants for therapeutic purposes. Always seek advice from a professional before using a medicinal or edible plant.