Over wintering a large (10') Sequoiadendron in borderline zone?
I've got a line on a 10' Sequoiadendron giganteum glaucum (which I thought was slightly hardier than species??)
Normally I'd plant a smaller one, and a spring planting for a summer of establishment prior to it's first "real" winter. This one would be a Sept planting, first frost mid Oct. These are grown at a nursery in about zone 8 so they don't know what cold is (maybe -12C for a nip).
So this is a huge tree, with a massive root ball (32 or 36 inch I believe). It has real bark if that helps any.
Anything that can be done to baby it, being so tall? Is it worth wrapping in burlap or even poly?? This is zone 6. I know of a large one in a close by zone 5, so under the right conditions this is possible, just... rare.
Thanks for any ideas.