I have a 50 ft Holly Tree that has been in my back yard since I moved here 22 years ago. This summer for the first time 2 tiny Holly Trees have sprouted near my Hydrangeas about 20 feet away. I was surprised and delighted to see them but need to transplant them away from my inground pool and deck. Can anyone advise me how long to wait and the proper way to transplant them? I'm not a gardener with extensive experience but I am willing to do whatever is needed to keep them alive through next winter. I live in NY out on Long Island's east end. Thank you so much!!!