Have you already visited your new and have a location chosen for the plant? Some areas of Texas have caliche soil that will force you to keep the plant in a pot because it is difficult for plant roots to break thru (and the soil is extremely alkaline). Other areas of the state have clay which does not drain well but which some hydrangeas will tolerate if also given amendments with some regularity. East Texas is perhaps where the soil may be best for growing hydrangeas.

Paniculatas will need to be planted so they get shade starting at 11pm this time of the year. Otherwise the leaves will scorch from the sun and the blooms will brown out. Since the big thing with Limelight is the color of the immature blooms, you want to limit the amount of sunlight so the blooms do not quickly turn from green to white. Thus, stopping sun exposure even earlier than 11am (6-9am only for example) might be a good idea in this case.

I would also try to propagate via cuttings if you are attached to this plant, in case the transplant/move does not work for some reason.

Thanks Luis for the advise! I don't know the exact location of our new house but I know it will be in the Spring area (North West of Houston). I've heard that it is a good location and to top that off we are only looking at houses with mature trees on the property. I've tried to propagate this Limelight but no result has been good... I'm not loosing hope, though.

I had no idea that the sunlight made the early blooms turn white prematurely, learn something new everyday!