Answer: It would have been better to move them in September so they would have more time to become re-rooted. The rule of thumb is to allow eight weeks before the ground freezes. So in my experience it is a bit late. Hostas are actually best divided and transplanted in early spring just as they begin to emerge. Delphiniums are very difficult to transplant successfully once they have any size, but small seedlings can be moved in the spring. I would recommend waiting until spring to move these, too.
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