Frangula alnus. Alder buckthorn.

Life-form & Growth Form:

Mega, meso-microphanerophyte. Woody perennial, tree.

Flowering period: 

May to July.


Acidic soils and peat, in scrub and woodland beside lakes and rivers. Also, fens and lagg zone of lowland raised bogs. Wide range of soils, avoiding drought-prone and waterlogged sites. Generally, lowland. 


Wetland drainage and reclamation for agriculture and development. Historic lowering of Lough Neagh water levels. Woodland and scrub clearance. Peat-cutting. Nutrient enrichment. Small population size.  

Static distribution map:
Frangula alnus
Frangula alnus
For an interactive map follow this link to the BSBI webpage