We have a small (about 5' tall) weeping willow tree we bought from a home improvement store. It was planted in our yard about 2 years ago. There have been a few new branches that have grown, plus the leaves appear healthy going by this and other sites I've looked at.
My question is this: we have not been regularly watering it during dry spells, and this past dry spell has been especially dry. Would ensuring it has plenty of water encourage new growth, or should I prune or fertilize it to promote more growth?