Regarding the last, the late Isaac Brock Lucas grew apples on M9 and
pears on Quince A in a walled garden at Markdale, Ontario in Zone 4
-with reliable heavy snow cover.
This material may be useful to home growers in cold area generally.
Doug Woodard
St. Catharines, Ontario
[NAFEX] Alberta-hardy apples and rootstocks,
Douglas Woodard, 08/19/2009