|How broad would a columnar hornbeam (Carpinus betulus Fastigiata) tree get?
|Answer from NGA
March 22, 2001
|According to Michael Dirr's "Manual of Woody Landscape Plants" this tree could grow as tall as 40 to 50 feet and as wide as 20 to 30 feet, despite the name. He also indicates that "Fastigiata" and "Columnaris" may be possibly confused namings in the nursery trade. Since other sources list "Columnaris" at a bit wider or closer to 35 feet, you might want to check with the original grower of the tree to see what they expect the mature width of their particular "Fastigiata" trees to be.
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