In message , K
writes
chili-girl writes
Grafting Quince (Cydonia Oblonga) onto Hawthorn (Crataegus monogyna) ?
will it be compatible.

Have a look at R V Rogers web site - I got a quince form them recently
and if I remember rightly they were advertising some on hawthorn and
some on quince rootstocks. I might be completely wrong though.

Digging around Google, I found a place selling Crataegus pinnatifida
grafted onto quince, which would be a positive sign.

However, while quince is commonly used as a rootstock for pears, not all
pears are compatible with quinces. So perhaps not all hawthorns would be
compatible with any particular (or even any) quince rootstock.

However, why not graft onto hawthorn rootstocks? - hawthorn hedging
plants are cheap.
--
Stewart Robert Hinsley