Ask A Scientist© Botany Archive

 
name        K.
status      other
age         60s

Question -  What is the common name and the scientific name of the
trees in old European cities that are pruned so their branches grow
horizontally, and the leaves are trimmed so the trees in full leaf are
"box" shaped. I've seen them in Brussels, Paris, Strasbourg. They seem
old and healthy. What is the process and the theory and why is this not
more popular in the U.S.?
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possibly helpful:

http://www.rbgkew.org.uk/isaeurope/

Anthony R. Brach, Ph.D.
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