Glossy Buckthorn, Alder Buckthorn, Fernleaf Buckthorn, or Tallhedge Buckthorn
Frangula alnus 'Columnaris'

Family: Rhamnaceae
Genus: Frangula (FRANG-yoo-luh) (Info)
Species: alnus (AL-nus) (Info)
Cultivar: Columnaris
Synonym:Rhamnus frangula
Synonym:Rhamnus frangus var. angustifolia

Category:

Trees

Height:

10-12 ft. (3-3.6 m)

Spacing:

6-8 ft. (1.8-2.4 m)

Hardiness:

USDA Zone 2a: to -45.5 C (-50 F)

USDA Zone 2b: to -42.7 C (-45 F)

USDA Zone 3a: to -39.9 C (-40 F)

USDA Zone 3b: to -37.2 C (-35 F)

USDA Zone 4a: to -34.4 C (-30 F)

USDA Zone 4b: to -31.6 C (-25 F)

USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

Sun Exposure:

Sun to Partial Shade

Danger:

All parts of plant are poisonous if ingested

Bloom Color:

Inconspicuous/none

Bloom Time:

Late Spring/Early Summer

Foliage:

Grown for foliage

Deciduous

Smooth-Textured

Other details:

Requires consistently moist soil; do not let dry out between waterings

May be a noxious weed or invasive

This plant is attractive to bees, butterflies and/or birds

Soil pH requirements:

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

Patent Information:

Unknown - Tell us

Propagation Methods:

Unknown - Tell us

Seed Collecting:

Unknown - Tell us

Regional

This plant has been said to grow in the following regions:

Saint Cloud, Minnesota

Gardeners' Notes:

0
positives
0
neutrals
2
negatives
RatingContent
Negative

On Feb 11, 2014, coriaceous from ROSLINDALE, MA wrote:

With shrub honeysuckles, glossy buckthorn (Frangula alnus, Rhamnus frangula) often forms solid understories in natural forest areas of northeastern North America. Like the honeysuckles, it leafs out very early, shading out the native herbaceous layer.

This spiny invasive species is a listed noxious weed, invasive, or banned in five states. Birds eat the fruit and then distribute the seed far and wide through the landscape.

This species was used for hedging in the 19th century, but it went out of use as better hedging plants became available.

Negative

On Mar 15, 2008, distantkin from Saint Cloud, MN (Zone 4b) wrote:

MN DNR states "European or common buckthorn and glossy or alder buckthorn are listed as restricted noxious weeds in Minnesota. It is illegal to import, sell, or transport buckthorn in Minnesota."