Question
hi, i have a 15' or so Norway that needs to transplanted; i understand this species has a deep root system. What issues will I run into transplanting this tree (move it about 15')...should the tree be dormant when this is done?

Answer
Evergreens should be moved earlier in the fall than deciduous plants so they have time to form new roots. They need at least 6 weeks before the ground freezes. In the spring, Evergreens can be planted up to 4 weeks after deciduous trees have opened their leaves, providing that the newly planted trees receive adequate water.

When you want to dig up a tree or shrub for transplanting, retain as much of the root system as possible. All ages of evergreens, can be successfully moved only if a ball of soil is left around the roots. The exposed roots should be protected with moist burlap or newspaper or with polyethylene sheeting. Every effort should be made to reduce root exposure to wind and sun, keeping the ball as moist as possible. It's best to prepare the hole before digging up the tree you wish to move.

Size of the root ball and size of the hole:

For deciduous trees and shrubs the soil ball should be:

Width = 9-12 in. in diameter/every 1 in. of tree diameter
Depth = 6 in./every 1 in. of tree diameter

For example: A tree trunk 2 inches wide would need a soil ball of 18-24 inches wide and 12 inches deep.

Dog the new hole twice the size of the root ball and as deep fill with good top soil and mulch around the tree with not more than 3 inch deep of organic mulch not piling it up on the trunk. remove any burlap before you plant.

This will be a large job and may take a professional with what is called a tree spade machine to move the tree.