Alan Haigh wrote, "I bet you could grow Navajo in a zone 3 if you bent the
canes over and
covered with leaves before temps got below 10 F. or so."
I have attempted to grow nearly everyone's blackberry and most of them
made it through the Minnesota Winter unscathed without being covered or , in
any way, winter-protected. The problem with most is that their fruit would
still be green when the Autumn frosts came. Fort Kent King was one that
winter-killed above the snow-line and whose snow-covered branches produced
abundantly - It didn't appear as though canes were killed by cold, rather
the dry winter wind desiccated the canes. The reason I settled on going
through the hassles with growing Fort Kent King is because, unlike most
others that I've tried, its fruit ripens before the frosts arrive.
Jim Fruth
Brambleberry Farm
Pequot Lakes, MN 56472
For jams, jellies, syrups and more:
www.jellygal.com
1-877-265-6856 (Toll Free)
1-218-831-7018 (My Cell)