Clumps are made by plating 2-4 liners in contact with one another in a
single hole. Usually this is not done with papyrifera. especially in NJ area
because of the species vulnerability to Bronze birch borer and birch leaf
miner. The more common clumper in the trade is Euro. white birch (B. alba)
and its CVs as well as river birch (B. nigra) its CVs.

--
Mike LaMana, MS
Heartwood Consulting Services, LLC
Toms River, NJ
www.HeartwoodConsulting.net




"Twobtold" wrote in message
...
Hi --
Do all Betula papyrifera grow as multi-stemmed trees? I like the look
of
the
trunk divided into 3 stems, gives the crown a fuller look.
So, does one plant the 'Paper White' Birch in clumps of 3 separate
plants
close together? Or, does one hope that nature will perform this feat for
the
gardner?
Thanks, Z6, NJ