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Buckthorn Solutions

History of Buckthorn
Common Buckthorn (Rhamnus cathartica) and Glossy Buckthorn (Rhamnus frangula) were introduced to Minnesota in the 1880's as an ornamental shrub. Its native origins are to Eurasia. Both species are extremely adaptable to our Minnesota climate. Today, Common and Glossy Buckthorn is found throughout much of Minnesota. These plants are invading wetlands, woodlands, prairies, river valleys, agricultural lands and your neighborhood.

Why is Buckthorn so invasive?
4They have a growing season 58 days longer that our native plant species.
4Their seeds can lay dormant in the soil for six years.
4Their seeds and fruit contain aleopathic chemicals that inhibit native vegetation growing    nearby.
4Their seeds can germinate in full sun or shady locations.
4Buckthorn seeds can float on water for a week and remain viable.
4They have no natural predators.
4Buckthorn re-sprouts vigorously after basal pruning.

Reasons to remove buckthorn:
Buckthorn kills native plants! Native plants cannot naturally compete with Buckthorn. Both Buckthorns are found in many forest understories, wetlands, prairies and river valleys. Native plants are our songbirds natural food source. When Buckthorn is all that remains, the birds eat the Buckthorn berries.

Buckthorn kills songbirds! When native plants disappear from an area where Buckthorn is dense, birds eat the berries of Buckthorn. However, the fruit of Buckthorn causes a severe, laxative reaction in the birds. Hence the name Rhamnus cathartic. If Buckthorn berries are the only source of berries in an area, the birds will eat the berries & excrete repeatedly until they become dehydrated and weak.
 

Buckthorn Fact Sheet ( photos & management info): http://www.nps.gov/plants/alien/fact/rhca1.htm

Replace Buckthorn with native plants.
These are excellent plants for sites that have light to partial shade. Add beauty, diversity, and natural food sources for songbirds to your woodland area.

Shrubs, small to medium size
Scientific Name / Common Name

Aronia melanocarpa / Glossy Black Chokeberry
Diervilla lonicera / Bush Honeysuckle
Ribes americanum / Black Currant
Ribes cynosbati / Pasture Gooseberry
Ribes missouriensis / Missouri Gooseberry
Rubus occidentalis / Black Raspberry
Rubus parviflorus / Thimbleberry
Symphoricarpos alba / White Snowberry

Shrubs, medium to large size
Scientific Name / Common Name

Amelanchier alnifolia / Saskatoon Serviceberry
Cephalanthus occidentalis / Buttonbush
Cornus racemosa / Gray Dogwood
Corylus americana / American Hazelnut
Corylus cornuta / Beaked Filbert
Hamamelis virginianav / Witch Hazel
Sambucus canadensis / Elderberry
Sambucus pubens / Red-berried Elder
Staphylea triflorata / American Bladdernut
Viburnum lentago / Nannyberry
Viburnum trilobum / American High Bush Cranberry

Trees
Scientific Name / Common Name
Acer spicatum / Mountain Maple
Alnus rugosa / Speckled Alder
Amlelanchier arborea / Downy Serviceberry
Amelanchier laevis / Allegheny Serviceberry
Carpinus caroliniana / American Hornbeam/Blue Beech
Cornus alternifolia / Pagoda Dogwood
Euonymus atropurpurea / Eastern Wahoo
Prunus virginiana / Common Chokecherry
Thuja occidentalis / Eastern White Cedar

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