I'm transplanting some Cornus ser plants today. I purchased them as whips and have had them in the ground for 3 years now and want to put them in a spot that will show off the nice winter color. My question is: should I cut them back soon after I transplant them (they are still dormant) or let them grow a season in the new spot and prune them a year from now? Or prune the oldest branches first and leave the rest? They are not large plants--only 3-5 whips per root so far. Thanks for taking time to answer my question.