Boone County Arboretum
9190 Camp Ernst Road
Union, Kentucky 41091
Phone: (859) 384-4999
Fax: (859) 384-6888
arboretum@boonecountyky.org

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Dawn - Dusk
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Cultural Details for Betula x 'Avalzam'

Common Name:
Avalanche Birch, Avalzam Birch

Growth Rate:
Medium to Fast

Average Mature Height:
50'

Average Mature Width:
35'

Flower Details:
Catkins, 2-4"

Fruit Details:
Nutlets

Fall Color:
Yellow

Bark Details:
Tan when young, then adding pink tints, and gradually becoming white.

Disease / Insect Problems or Resistance:
Good resistance to bronze birch borer

Native Habitat:
Asia. Imported from Japan in the mid to late 1800's by Storrs & Harrison Nursery, Painesville, OH. Introduced by Lake County Nursery, Perry, OH.

Other Features:
Vigorous grower. Elegant. Catkins can be somewhat messy if placed near a patio/walk. Delicate leaves.

Culture and Care:
Hardy to zone 5. Transplants well. Prefers acid soil but is adaptable. Will tolerate moist to wet soil. Requires little to no maintenance.

This plant was blooming:
4/5/2010 - 4/19/2010
3/30/2007 - 4/5/2007

Plantings of this cultivar at Boone County Arboretum:
8569, 8570

    The information on this page may have come from one or more of the following sources:
  • Dirr, Michael. Manual of Woody Landscape Plants. Stipes Publishing. 1998.
  • Hightshoe, Gary L. Native Trees, Shrubs, and Vines for Urban and Rural America. John Wiley & Sons. 1988.
  • North Carolina Extension Plant Fact Sheets. www.ces.ncsu.edu
  • University of Connecticut Plant Database. www.hort.uconn.edu