It's been amazing to see magnolia trees blooming in Cache Valley this Spring. They have survived for decades in Logan, Hyrum, Nibley, and even in the coldest part of the valley where I live, southwest of Logan. I've got about 8 magnolia trees that even survived the -20 temperature Thanksgiving morning, 2010 when trees had not become totally dormant. I had some that had die back to the trunk and survived, but had a few that had no die back at all. The most suprising one has been the Sweetbay 'Moon Glow' magnolia that looks a lot like the southern magnolias with their glossy evergreen leaves. It's ignores the frigid temperatures and blooms every year.