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["Kieran &/or Donna" <holycow@frontiernet.net>]

Bradford pears are calleryana, if you can find some cheap they would do, or 
go dig some where they have come up from the ornamental seeds.  Calleryana 
makes a taproot and doesn't like to lose it, so don't tackle a plant too big 
unless you are willing to either dig to China or put up with reduced growth 
for a year or two.  I could go around town and collect as many rootstocks as 
you want, so I'm sure you can too.  Even now, with them leafed out, you'll 
be cutting the top right off to graft so don't have to worry too much about 
the time of year.  Donna, Cookeville TN