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Alder Buckthorn, Glossy Buckthorn
Scientific Name: Frangula alnus P. Mill.
Synonym: Rhamnus frangula
Family: Rhamnaceae
Alder Buckthorn, Glossy Buckthorn (Frangula  alnus)
Rhamnus frangula, Britton, N.L., and A. Brown. 1913. Illustrated flora of the northern states and Canada. Vol. 2: 504.
Recommended Temperature Zone:
sunset: 1-7,10-13
USDA: 2-9

Sun Exposure: Full sun to part shade

Origin: Eurasia and North Africa

Growth Habits: Deciduous small tree or large shrub, up to 15 feet in height (4.5 m), 6 to 15 feet spread (1.8-4.5 m); dark glossy leaves, 1 to 3 inches long (2.5 to 7.5 cm)

Watering Needs: Prefers well drained soils

Propagation: Seeds, softwood cuttings

This plant is considerd an invasive weed in a number of states.
Common cultivars:
- 'Columnaris' (Tallhedge buckthorn): upright, narrow, 12 feet tall (3.6 m), 3 feet wide (90 cm), likes full sun
- 'Asplenifolius' (Fernleaf buckthorn) up to 10 feet tall (3 m), with glossy foliage giving the effect of fern leaves, preference for light shade

Robert H. Mohlenbrock. USDA SCS. 1989. Midwest wetland flora: Field office illustrated guide to plant species. Midwest National Technical Center, Lincoln, NE.

Blooming Habits:
Flowers are bisexual, they are followed by red turning black, dark juiced berries, 0.32 inch in diameter (8 mm), slightly toxic, that stains sidewalks.

Fruiting Habits:

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