SECTION 622 - TRANSPLANTING SHRUBS, HEDGES, AND TREES
622.01 Description This work shall consist of digging, moving and replanting
existing shrubs, hedges, and trees in accordance with these specifications and in conformity with the plans or as directed.
622.02 Materials – General All non-plant materials shall con form to the
requirements specified in the following Sections of division 700 – Materials 6-78 Fertilizer 717.01 M u l c h 717.04 H u m u s 717.09
622.03 Shrubs and Hedges
a.Digging The earth of shrubs and hedges to be moved shall be carefully encompassing the roots as is customary in good nursery practice. Minimum size of the rootball shall be as indicated in the current edition of the "American Standards for Nursery Stock" (ANSI Z60.1)
b.Moving The earth rootball shall be maintained as a solid unit during the moving of the shrubs and hedges and must be protected from breaking or cracking by careful handling. The rootball shall be tightly wrapped with burlap or similar material. Earth rootballs greater than 18 inches in diameter shall be tightly bound with cord or rope placed over the burlap unless the shrubs or hedges are to be replanted immediately after digging.
c.Planting The plants shall be planted in the designated new location at the same depth below ground surface as before they were moved. Backfill consisting of 3 parts excavated soil and one part organic humus shall be placed under and around the rootball to eliminate all air pockets and to support the plant. Insofar as feasible, when hedges are to be transplanted, the individual plants shall be replanted in the same relationship to each other that existed before they were moved. Fertilizer tablets shall be placed into the backfill at the following rates. Shrubs to 2 foot high or spread 1 tablet Shrubs to 4 foot high or spread 2 tablets Shrubs to 6 foot high or spread 3 tablets
d.Time of Transplanting Plants shall be dug and transplanted only when dormant, unless otherwise directed by the Resident. When dug, shrubs and hedges shall be moved directly to the final planting site and planted immediately, if possible. The rootball must be kept moist at all times during transplanting operations. If construction makes it impossible to replant the plants immediately after digging, the rootballs of the plants shall be kept completely covered with a thick layer of earth, straw, bark mulch, peat moss, or similar material which shall be kept moist at all times while the plants remain unplanted. Shrubs may be held in approved pots under conditions of delayed replanting.
e.Pruning All pruning shall be done in accordance with the best horticultural practice. Dead, diseased, or injured shoots and branches shall be removed. In order to restore a normal balance between top and roots, deciduous shrubs shall be thinned by removing uniformly scattered, selected branches which shall be cut back to the main stem, as directed. The Resident may also require tip pruning. Tip pruning may also be required for 6-79 evergreens. In the case of hedges, the Resident may require shearing to uniform, even surfaces.
f.Watering As soon as the plants are planted they shall be thoroughly watered to the point where the roots and the surrounding earth are well saturated. The first application of liquid fertilizer shall be made during planting.
g.Mulching After removing all weeds and grass, the ground surface over the entire area of the planting pit shall be covered to a depth of 4 inches with bark mulch.
622.04 Trees
a.Digging All trees to be moved and replanted shall be dug with a solid ball of earth around the roots as is customary in good nursery practice. The diameter of the ball shall be not less than 10 times the diameter of the trunk of the tree measured 1 foot above the surface of the ground. Depth of the ball shall be not less than 60% of its diameter for balls up to 48 inch diameter. For balls over 48 inch diameter the ball shall have sufficient depth to maintain a solid structure and to encompass all the feeding roots under the ball area.
b.Moving The ball must be maintained as a solid unit during the moving of the tree. The ball must be protected from breaking or cracking by careful handling and by being tightly bound with cord or rope over canvas, burlap, or similar wrapping. The ball shall be firmly attached to a tree platform of suitable size during moving operation, as required.
c.Planting The trees shall be planted in the designated new location at the same depth in relation to the ground surface as before they were moved. Backfill consisting of 3 parts excavated soil and one part humus shall be placed under the ball and around the periphery of the ball. Backfill shall be puddled and firmed in place to eliminate all air pockets and give adequate support to the ball. Fertilizer shall be applied as specified in Section 621.25.
d.Protection Every care shall be taken to prevent injury to the tree during the transplanting operation. All parts of the tree shall be carefully protected. Branches shall be tied out of the way of possible injury. No chain, cable, or heavy rope may be attached to the trunk or branches without protective padding adequate to prevent bruising or other injury.
e.Time of Transplanting Trees shall be dug and transplanted only when dormant, unless otherwise directed. When dug, trees shall be moved directly to the final planting site and planted immediately if possible. The ball must be kept moist at all times during transplanting operations. If construction problems make it impossible to replant the tree immediately after digging, the ball of the tree must be completely covered with a thick layer of earth, bark mulch, peat moss or similar material which shall be kept moist at all times while the tree remains unplanted. Pruning, watering, fertilizing, mulching, and supporting shall be as specified in the applicable Sections of Section 621 - Landscaping.
622.05 Maintenance It shall be the Contractor's responsibilit y to protect and care for
transplants. They shall be watered weekly during dry weather or as otherwise directed. The 6-80 Contractor shall take steps required to protect the plants from damage and from diseases and pests. Should damage occur it shall be repaired by the Contractor, according to the best horticultural practice. The Contractor shall be responsible for transplants through one growing season.
622.06 Replacement If the ball is badly broken or the plants are otherwise badly
damaged or if, in the opinion of the Resident, during the life of the contract the plants show such signs of loss of health or appear to be in danger of dying, the Contractor will be required to replace the plants with others of the same size and variety or approved plants of equal value, at the proper season.
622.07 Method of Measurement
Transplanting shrubs or trees will be measured in place after transplanting by the single shrub or tree unit.
622.08 Basis of Payment
The accepted quantities of transplanting shrubs or trees will be paid for at the contract unit price for each plant properly transplanted and accepted, which payment shall include digging, binding, moving, replanting, pruning, mulching, care and maintenance and if required, replacement of the shrubs, and for all fertilizer, mulch and other materials, and for all incidentals necessary to complete the item. Payment will be made under: P a y I t e m P a y U n i t
622.10 Transplanting Shrub Each
622.11 Transplanting Tree Each
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Source: Standard Specifications — Highways and Bridges, 2020 Edition. Pages 547–550 of 817. View official source ↗