I have, or is it had, the Magnolia Tree, 'Butterfies', a beautiful spring bloomer that is supposed to be hardy in zone 5-9. I am in zone 6. This spring only a few flowers appeared on half of the tree and now it only as a few limbs with leaves. Most of the tree is just a bunch of twigs. This past winter in the northeast was very cold with little to no snow cover for insulation. Combine that with extreme temperature fluctuations in the spring, including some days in March in the high 90s and I would suggest that our crazy weather lead to the demise of this tree.