Alder Buckthorn is a large, native, thornless, deciduous shrub or small tree with ovate green leaves that turn an attractive yellow in autumn. Tiny green/cream flowers in June attract masses of bumble and honeybees and are honey scented. It is a food plant of the yellow Brimstone butterfly. The fruits are initially red, then turn black and are eaten by thrushes. Various bits are used to make natural dyes.
 
Description
Rhamnus frangula/Frangula alnus
Common name: Alder Buckthorn.
Native: Europe
Provenance: UK
Size and spread (10 years): 3m x 2m
Soil conditions: Neutral to acid, wet heaths and bogs.
Planting instructions: Ideally plant in open scrub-land, hedgerows and damp areas.
Mature height: 5m