I have room for 1 more tree. Zone 4a/b.
Heavy clay that is wet over winter. Debating between Harvest Queen on OHxF 97 vs Krazulya
on Ussurian pear.

OHxF 97 will be better for
resistance to fireblight, pear decline +/- collar rot. Less cold resistance and Harvest Queen might
be at it’s limit for Zone 4.

Ussurian rootstock (Krazulya variety)
– Excellent cold hardiness. Very
fireblight resistant. Susceptible to
pear decline +/- collar rot.

In both cases the tree will have
multiple varieties topworked over the next couple years.

I think with my soil I would be
safer with OHxF 97. What do people
think?

Sure not ideal, but if they die they die, I'm not moving.