"........... Kitchen garden magazine says that sweet chestnut 'Regal' will
only be 20 foot in 15 years. Is this feasible or a sad underestimation of
the tree's growth? .........."

I'd be more inclined to say it will grow to 20 ft in only 15yrs,
and it will keep on growing for the next 50 yrs at least....

--
David Hill
Abacus nurseries
www.abacus-nurseries.co.uk
***2004 catalogue now available***