Yes - most newly installed plants require above-average watering. Typically, additional watering for a newly planted tree is recommended, especially during the first 2 years. The current understanding of balled and burlapped trees is: about 90% of the tree root system was left at the nursery where the tree was dug. The installed tree has about 10% root surface to absorb water. While too much water can rot tree roots, a thoughtful balance of extra water is typically needed for newly planted trees, especially for the first 2 years.