Zelkova question
 

I bought a Zelkova that I planned on chopping to do a broom style. It has a
very nice 1" thick straight trunk and the grower chopped it already to
about 18" for shipping. When it arrived I noticed that it has one very big
root on one side of the tree that will never work. My question is do I keep
it in the 5 gallon pot and chop it now or maybe do a wire tourniquet first
to get a better root system than chop it in a year or so. Any ideas
suggestions would be greatly appreciated
TIA
Dave