Gardening and Horticulture - root ball question

We have had several very large trees delivered for a major landscape project. They arrived with typical burlap but also tightly bound rope and heavy support wire. Will these simply rot and rust away...? Leave them?

thanks for any advice.

After tree is placed in hole and leveled you remove wire basket and burlap. Burlap on bottom of root ball can remain, but if it is treated burlap or vinyl it will have to be removed as well.

See video here: http://www.arborday.org/trees/video/howToPlant.cfm

thanks much...I thought it unusual...the nursery delivery guy said just leave it and fill in the hole...we have triple mix on the property (the soil is all clay) but he also said not to put that in the trees hole?

Amending soil in hole is not recommended. In very little time the roots will extend beyond the amended soil and encounter the local soil. So, it's best that it adjust itself to soil right off the bat.

Do not fertilize the trees. Keep soil moist, not wet.

Plant according to size at maturity, making sure trees will have enough room to grow to their potential without canopy and root system interfering with driveway, sidewalks, patio, foundation, etc.