Alder Buckthorn

Alder buckthorn is a tall, moisture-loving shrub or small tree native to Europe and parts of Asia, valued for its ecological benefits but considered invasive in many parts of North America.

Frangula Alnus (Rhamnus Frangula)

Origin: Europe/ Asia

USDA Hardiness Scale: Zones 3-7

Pros:

• Supports pollinators and wildlife – produces nectar-rich flowers and berries eaten by birds

• Tolerant of wet soils – grows well in damp, poorly drained areas like streambanks or wetlands

Cons:

• Invasive in North America – outcompetes native plants and disrupts natural ecosystems

• Toxic berries and bark – not safe for human consumption without proper processing