Whats up with Chamaecyparis lawsoniana 'Sullivan'?
What's the story on this guy? Apparently, it does EXCELLENT in Chicago, Zone 5 - perfectly conical, no dieback from the cold whatsoever, blue-green foliage, moderate growth rate. Any experience with it in the midwest besides this? Anybody know where it developed or why it is so cold-hardy? Many C.lawsonianas do ok in Zone 5, but none like this? I took cuttings of side shoots last year and got a few to root, not sure if they will grow leaders though. Dax, do you have any experience with this? I know you are Z5.