Nobody is getting in your ass. I was merely asking you to reassess the value of what you offer here. Spamming every thread even when you have nothing valuable to add is not helpful. Sorry if that hurts your feelings.
I've had JBP see and do fine with sub zero temps, both as landscape trees and as potted trees heeled in to the ground outside. I see them most often rated as zone 5 trees, so zone 6 should be ok with typical winter protection ie. heavy mulch, shade and wind protection.
I agree that it can be done, it is important to remember that when we talk about the cold tolerances of species we are really considering the soil temperature that the roots are in. Very different for a tree in a pot above ground as opposed to a tree in the ground. When i started growing JBP i asked a japanese grower who has grown JBP in Canada for over four decades about the temperature requirements. He told me that he had lost JBP planted in the ground when the temperatures fell below -10 degrees Celsius for more than ten days to two weeks. This is in keeping with the information i have received from several Bonsai masters.How about some particulars in your over-wintering plans, @mickey12 ? I lived in/around the Springs for a number of years in the late 80's, early 90's and still visit regularly some I'm familiar with the weather in all four seasons. Didn't grow bonsai then, but did landscape work, so I've got a little idea of what would be suitably hardy for the area. @M. Frary points out two good candidates for growing in your climate as their hardiness is a lot more reliable. Having said that, I've been growing some JBP here in NH for 5-6 years now, so it certainly can be done, (c'mon man, I'M growing 'em).
Sounds like you are quite a fan of mine. All I have seen you do is talk shit and stick your nose into something that had nothing to do with you.
This is a valuable piece of information.
It is true to a certain extent. Korean sourced Japanese Black Pines are much more hardy than the pure Japanese Black Pine.
