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580 -3 . 4 Collected Plants ( Herbaceous ) ( HC ) : The root mass and vegetative portions of collected herbaceous plants shall be as large as the specified container-grown equivalent . Do not plant any collected plant before inspection and acceptance by the Engineer . 580 -3 . 5 Specimen Plants ( Special Grade) : When Specimen (or Special Grade ) plants are required , label them as such on the plant list , and tag the plant to be furnished . 580 -3 . 6 Palms : Wrap the roots of all plants of the palm species before transporting , except if they are CG plants and ensure that they have an adequate root ball structure and mass for healthy transplantation as defined in " Florida Grades and Standards for Nursery Plants " . The Engineer will not require burlapping if the palm is carefully dug from marl or heavy soil that adheres to the roots and retains its shape without crumbling . During transporting and after arrival , carefully protect root balls of palms from wind and exposure to the sun . Muck grown palms are not allowed . After delivery to the job site , if not planting the palm within 24 hours , coverthe root ball with a moist material . Plant all palms within 48 hours of delivery to the site . Move sabal and coconut palms in accordance with the " Florida Grades and Standards for Nursery Plants . " 580 -3 . 7 Substitution of Container-Grown ( CG ) Plants : With the Engineer' s approval , the Contractor may substitute CG plants for any other root classification types , if he has met all other requirements of the Contract Documents . 580-4 Planting Requirements . 580 -4 . 1 Layout : Prior to any excavation or planting , mark all planting beds and individual locations of palms , trees , large shrubs and proposed art and architectural structures , as shown in the plans , on the ground with a common bright orange colored spray paint , or with other approved methods , within the project limits . Obtain the Engineer' s approval and make necessary utility clearance requests . 5804 . 2 Excavation of Plant Holes : Excavate plant holes after an area around the plant three times the size of the root ball has been tilled to a depth of the root ball . Ensure that the plant hole is made in the center of the tilled area only to the depth of the plant root ball . Where excess material has been excavated from the plant hole , use the excavated material to backfill to proper level . 580 -4 . 3 Setting of Plants : Center plants in the hole . Lower the plant into the hole so that it rests on a prepared hole bottom such that the roots are level with , or slightly above , the level of their previous growth and so oriented such as to present the best appearance . Backfill with native soil , unless otherwise specified on the plans . Firmly rod and water- in the backfill so that no air pockets remain . Apply a sufficient quantity of water immediately upon planting to thoroughly moisten all of the backfilled earth . Keep plants in a moistened condition for the duration of the planting period . When so directed , form a water ring 6 inches [ 150 mm] in width to make a water collecting basin with an inside diameter equal to the diameter of the excavated hole . Maintain the water ring in an acceptable condition . 580 -4 . 4 Special Bed Preparation : Where multiple or mass plantings are to be made in extended bedding areas , and the plans specify Special Bed Preparation , prepare the planting beds as follows : Remove all vegetation from within the area of the planting bed and excavate the surface soil to a depth of 6 inches [ 150 mm] . Backfill the excavated area with peat , sand , finish soil layer material or other material to the elevation of the original surface . Till the entire 49 Technical Specifications F :\Public Works\ENGINEERING DIVISION PROJECTS\0744-8th St-USI to 6th Ave\Admim\bid documents\0744 CONTRACT DOCUMENTS\Technical Specifications .doc