Question
I have a Weeping Mulberry Tree (fruitless) but I am trying to decide where to plant it.  How deep is the rooting system on the average Weeping Mulberry?

Answer
The weeping mulberry is a good choice in Hardiness Zones 4 through 8. One of the tree's best features is that is suitable for planting in any well-drained soil and is drought tolerant. It does well in both sun and light shade.
Prepare the tree for planting. Weeping mulberry transplants well. Select a balled and burlapped specimen and remove all twine and wire. Cut away half of the burlap covering the rootball.
Dig the hole about twice the size of the rootball and as deep fill with top soil and mulch around the tree with three feet of not more than 3 inches deep of organic mulch not piled up on the trunk. This will help hold moisture around the roots. Water with 1 inch of water every third day for the first 6 weeks and then every week-place a pan under the tree and turn the sprinkler on and when the pan has 1 inch of water in it stop.

The root system will grow about 1 1/2 times the spread of the foliage and the majority will be within the first 24 inches of the top of the ground level.  

This is not the best time of the year to plant rees due to the hot dry weather. early Fall or early spring are ideal.