Posted: 14/05/2015 at 19:20
It may help and would certainly mean it was less likely to suffer from hunger or thirst. Plant it now in a well prepared hole and use plenty of well rotted garden compost and manure when you back fill. Water it well before and after planting and keep it watered for the rest of this summer until the autumn rains start.
It may be that when you dug it up from the hydrangea bed you disturbed its roots and robbed it of its finer root hair follicles which are the ones that take up up moisture and minerals so give it sprinkling of mycorrhizal fungi (from good garden centres) on its roots when you plant it out as it encourages healthy root formation and access to beneficial micro-organisms that will help you acer thrive.