622PLANTING TREES, SHRUBS, AND VINES

622.01Description

This work shall consist of furnishing, delivering, and planting trees, shrubs, vines, and seedlings for wildlife habitat.

This work shall also consist of the performance of incidental planting procedures and plant establishment work to provide a complete operation in accordance with

105.03

MATERIALS

622.02Materials

Materials shall be in acco rdance with the following:

Backfill Material .......................................................... 914.01 Fertilizer ...................................................................... 914.03 Mulch .......................................................................... 914.05(b) Pipe .............................................................................. 914.09(e) Plants ........................................................................... 914.08 20 Porous Material ........................................................... 914.09(d) Tree Wound Dres sing .................................................. 914.09(c) Water ........................................................................... 914.09(a)

Soil conditioners such as peat moss or calcine clay may be added with written permission.

Guy wire shall be minimum No. 14 gauge galvanized wire.

622.03Care and Handling of Plants 30

If the outside air temper ature exceeds 35°F when the pl ants are delivered, the plants shall be planted immediately or placed in inside or outside storage. If they are stored outside, the roots shall first be puddled in a paste solution of backfill and water. The plants shall then be separated and th eir root systems heeled-in by completely covering with moist soil. If they are stored inside, the roots shall be puddled in a paste solution of backfill and water. Straw, peat moss, or corncobs shall be worked in and around the root system and kept moist.

Plants which are delivered in boxes, wrapped bundles, or other forms of closed containers, including trucks, and which are stored inside may remain in the container for 48 h from time of delivery, provided the containers are opened immediately and the plants are watered if necessary.

622.01

If the outside temperature is 35°F or less when plants are delivered, the plants shall be placed in inside storage immediatel y. Inside storage procedures shall be in accordance with the above requirements. Plants may be transferred to outside storage when the outside temperature exceeds 35°F provided they are puddled again and then heeled-in. 50

Temperature inside the storage building shall be maintained between 35°F and 55°F. Plants shall not remain in storage, either inside or outside, for more than seven days, unless otherwise specified because of unfavorable planting conditions.

Plants may be rejected on failure to comply with these specifications.

Plants shall be planted or placed in storage before being exposed for 10 consecutive hours at temperatures less than 35°F. Storage of plants shall be in a moist 60 storage building or they shall be placed outside in a compact group with balls or containers completely covered with corncobs and kept moist. Plants shall not remain in storage for more than 10 days, unless otherwise specified due to unfavorable planting conditions.

Plants may be rejected upon failure to comply with these specifications.

622.04Collected Plants

At least 24 h before starting to dig collected plants, notification shall be given of the time and place of digging so inspection of the work and of the plants can be made, 70 as desired.

Collected plants shall be dug carefully in a satisfactory manner. All operations of digging, transporting, and replanting collected plants shall be in accordance with all applicable laws and regulations of the State.

622.05Excavation for Plant Holes

Stakes will be set to locate plant holes for each tree, shrub, or vine. The outline of each seeding bed will be staked and the planting on the required centers shall be as directed. Stakes for the staking operation sha ll be furnished. The location stakes shall 80 be removed as directed. Excavation shall be such that the plant holes are cylindrical in shape with the sides approximately vertical . Material excavated from the holes may be used for backfill providing it is in acco rdance with 914.01. Otherwise, it shall be distributed uniformly within the construction area as directed. The excavated material shall not be stockpiled on turf or in ditches. Material unsuitable for the growth of vegetation, including rocks and boulders, shall be disposed of outside the right-of-way as directed and in accordance with 203.01 and 203.10. Plant holes shall be in accordance with the details and tables shown on the plans. If plants have not been planted within 10 days after excavation of the hole, the hole shall be refilled and re- excavated at the time of planting. No additional payment will be made for this 90 operation. 622.05

If, after staking or excavation of the plant holes at the locations shown on the plans, it becomes apparent that the location is unsuitable for planting due to accumulation of groundwater, possible floodi ng because of terrain conditions, or unsuitable soil conditions, plant holes shall be relocated as directed. Such relocation shall be done with no additional payment.

622.06Planting Season

The planting season shall be from September 1 through the following May 25, 100 with the exception that trees shall be planted from October 1 through the following April 15, provided that trees are dormant. Crown vetch plants and seedlings shall be planted only from April 15 through May 30, unless approved in writing. Bare rooted plants shall be planted only when the outside air temperature exceeds 35°F. Unless otherwise approved, deciduous plants, except those container grown, shall be dormant at the time they arrive at the work or storage site. Evergreens shall not have active terminal growth. At least 40% of the total number of balled and burlapped, and container grown plants, not including crown vetch plants, shall be planted from the beginning of the planting season through December 31. Bare root seedlings for wildlife habitat shall be planted from October 1 through the following April 30. 110 Container grown seedlings for wildlife habitat shall be planted at any time.

The initial planting and spring replacemen ts, in accordance with 622.18, shall be completed satisfactorily within the planting season which expires prior to the completion date of the contract. The establishment period for these plants shall be from the end of the specified planting period to the fall inspection. If the initial planting and spring replacements are not completed within the specified time, the completion date may be extended one year to provide an establishment period. If the completion date is extended, all requirements of 622.18 shall apply until final inspection and acceptance. 120

622.07Pruning

Before the plant is placed in the plant hole, any bruised or broken parts of roots shall be cut off smoothly as approved unless otherwise specified or directed. All plants shall be pruned either before or after planting. Such pruning generally shall consist of thinning out or cutting back secondary branching to reduce the foliage by 1/3 to 1/2 in accordance with accepted horticultural practices. Pruning operations shall maintain the general crown outline and characteristic branching pattern for each species. Pruning or cutting back of terminal l eaders which are over 3/8 in. in diameter at the point of cut will not be allowed. Broken or dead branches, or any other objectionable parts of 130 the plant, shall be removed throughout the life of the contract. Pruning tools shall be kept sharp and shall be sterilized in denatu red alcohol after each hour of use. All cut surfaces 3/8 in. or more in diameter shall be painted with a tree wound dressing.

Bare rooted shrubs shall be cut back to 1/2 their minimum specified height as shown on the plans. Pruning shall be performed after the shrubs have been sealed with Department seals and prior to the leaf buds breaking dormancy. At the time of the 622.06

spring and fall inspections, bare rooted shrubs will be accepted at their original specified height provided they are healthy, in good growing condition, and are no less than 1/2 the minimum specified height. 140

622.08Planting, Back filling, and Watering

The plant shall be placed in the plant hole at the proper position for depth, alignment, final grade of the surrounding ground level, and vertical position of the trunk. The planting procedure shall be performed in such a manner that the top of the ball of the plant is as shown on the plans at the time of planting. The planting procedure shall be in accordance with the details as shown on the plans. Backfill material in accordance with 914.01 shall be placed around all plants except seedlings. The quantities of backfill material required per plant shall be as shown on the plans.

In areas which are designated on the plans as beds for group planting, the soil shall be tilled to a minimum depth of 6 in. in such a manner that all sod and vegetation is destroyed. These areas shall be tilled at l east two times with an interval of 14 days between tilling operations. Planting may be done immediately after the second tilling. Additional tilling shall be performed if vegetation appears before mulch is applied. Sod and vegetation shall be removed in lieu of the tilling operation when the soil temperature or moisture conditions are such that the sod and vegetation would not be destroyed by tilling. At other times, sod and vegetation may be removed in lieu of tilling. If the excavation resulting from sod removal is greater than 1 in. deep, it shall be backfilled with topsoil to 1 in. above the original ground. After sod and vegetation 160 removal and backfilling, the bed area shall be cultivated to a depth of 6 in. Large clods, rocks, and other debris encountered in the cultivation work and any excess soil shall be removed. The outline of beds for group plantings shall be no closer than 3 ft to the center of any of the outer plants in the area.

In addition to the water applied at the time of planting, unless excessive moisture prevails, a minimum of two supplemental waterings shall be applied between May 1 and June 15, and one every 14 days between June 15 and September 15. Sufficient water shall be applied to individual plants to saturate the backfill and the mulch area. Plants in beds shall receive water equivalent to the quantity used for individual plants. 170 Liquid fertilizer in accordance with 622.09 , may be applied with the supplemental watering and the method of application is subject to approval. Lance watering will not be allowed.

Container grown seedlings for wildlife habitat which have been planted from June 1 through August 31 shall be maintained after installation for 30 days. Maintenance shall include watering the seedlings at the time of planting and once every seven days.

With the plant in its proper position, the plant hole shall be backfilled with material in accordance with 914.01. The backfill material shall be worked firmly around the roots as the hole is gradually filled. The plant shall be raised gently and 622.08

lowered slightly as the soil is added to help eliminate air pockets around the roots. Soil shall be added in layers of about 6 in. and each layer tamped to make it firm and to hold the plant perpendicular. Water shall be used to settle the soil and to eliminate air pockets around the roots, unless otherwise directed. The top 4 in. of soil necessary to

fill the plant hole completely shall be a very fine mixture and shall be placed on top of

the firmed backfill and allowed to remain loose and untamped.

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Balled and burlapped plants shall be handled by the ball and placed in the holes

in such a manner that the soil of the ball does not become loosened from the roots. The

soil directly beneath the ball shall be firmed to minimize settling. Guy stakes shall be

driven before backfilling operations begin. After the hole has been partially backfilled

and the material firmed under and around the ball, the burlap shall be cut away and

removed from the stem of the plant. Backfilling and firming shall then be completed

in a manner to avoid loosening the soil from the root ball. Watering shall be done in

accordance with 622.08(a). Backfill material shall be in accordance with 914.01.

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Seedlings shall be from 6 to 18 in. in height. Seedlings shall be planted as directed

in the locations shown on the plans. Species shall be selected from the list as shown

on the plans. Alternate species selection shall be subject to approval. Seedlings shall

be planted no closer to each other than the distance shown on the plans. Seedlings shall

not be planted in rows, but instead shall be planted in a natural appearing pattern.

Failure to comply with this procedure will require the replanting of the seedlings as

directed with no additional payment. All damaged seedlings shall be replaced with no

additional payment if replanting is required.

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622.09Liquid Fertilizer Application

All plants shall be fertilized with a water soluble 5-10-10 fertilizer, or an

equivalent amount of plant nutrients, at the rate of 0.75 lb/100 gal. of water. Fertilizer

shall be applied to each installed plant until the mulched area over the plant hole is

saturated. Three applications shall be made: one on or about July 1; one about August

1; and one about September 1.

622.10Mulching

Mulch, in accordance with 914.05(b), shall be placed as a top layer around each

plant as soon as it has been installed. The mulch shall cover the entire area as described220

in 622.08 and shall be placed around individual plants in accordance with the plans.

622.11Guying and Staking

Guying and staking shall be in accordance with the details shown on the plans.

Guy wire shall be placed through rubber hose material around each tree then twisted

to secure the tree in a relatively stable position. Three wood stakes shall be spaced

equally about each tree. The guy wire shall be secured to each stake at an

approximately right angle. Support of multi-stem trees of 4 to 6 ft in height shall

consist of inner limb guying and bracing stakes. The securement point and placement

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of guy wire shall avoid abrasion of tree limbs. The guys and stakes shall be maintained230

for the duration of the contract. Prior to final inspection, all materials used to support

trees shall be removed and disposed of, except as otherwise directed for trees requiring

additional bracing time. However, supports for fall replacement shall remain in place.

If approved, stakes may be left flush with the ground.

622.12Plant Protection

Within five days after planting and prior to wrapping, all trees, except evergreens,

shall be protected against borer attack with an insecticide mixture applied to the tree240

trunk with a paint brush or a suitable hand sprayer. The application shall cover the

trunk from the root crown to the first major branches. The mixture shall consist of

enough powdered skim milk to form a smooth slurry when added to either dieldrin 18

at the rate of 2 qt to 50 gal. of water or thiodan 50 at the rate of 1 lb to 50 gal. of water.

Within seven days after planting, all crabapple and shade trees with a 1/2 in.

diameter or larger, except for multi-stem forms, shall be wrapped with a double layer

of 18 by 14 mesh per in. aluminum mill finish screen wire mesh around the trunk of

each tree as shown on the plans. The height of screen wire shall be from the existing250

grade to below the lowest branch. The screen wire shall be overlapped at the ends. The

screen wire shall be secured to itself with hog rings or other approved methods, and to

the rods by approved means.

Plastic coil type protective wrapping will be acceptable as an alternative to the

screen wire and reinforcement rod method of tree protection or staked trees of less

than 2 in. caliper. The wrapping shall be loosened twice each calendar year. The first

adjustment shall be made between May 15 and June 15. The second adjustment shall

be made between September 1 and September 30. The plastic tree protective wrapping

shall extend to the height of the bottom limb.260

The Contractor may submit other proposed methods of rodent protection to the

Department’s landscape architect for approval prior to installation. The design of the

protection shall ensure an average air space diameter of 2 in. greater than the tree’s

callipered size at installation. The protection shall enable air movement through its

surface to dry the tree trunk following periods of precipitation. The protection shall

not damage the tree nor hinder its growth.

Multi-stem trees shall be wrapped with commercially available wrapping paper

wrapped tightly around the trunks from the ground to the lowest branch with a270

minimum of 1/2 in. overlap. The wrapping paper shall be tied securely with stout cord

at top and bottom and at two intermediate intervals.

622.13Retaining Walls and Tree Wells

Retaining walls around the roots of trees or shrubs, and tree wells around the

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trunks of trees or shrubs shall be constructed at the locations and to the shape and

dimensions shown on the plans or as otherwise designated. They shall be of mortar

and masonry, or other type as specified. Mortar shall not be used in any portion of the

tree well extending below the top of contiguous porous material used for tree root

protection. The inside face of a tree well shall be no less than 2 ft from the outside280

edge of the trunk of the tree or shrub.

No material shall be placed between the tree trunk and the wall of the tree well.

622.14Tree Root Protection

Where tree root protection is specified, the entire area of the root spread shall be

protected. The limits of this area shall be as designated, but in general this area

corresponds to the area of the ground surface lying beneath the limb spread of the tree.

The area shall be cleaned of all vegetation and debris. Porous material, in accordance

with 914.09(d), shall be placed uniformly over the area to a depth in proportion to the290

height of fill, varying proportionally from 3 in. for fills of 1 ft or less to 12 in. for fills

of 4 ft or more, or to such other depth as may be designated. A layer of No. 23 sand or

other approved material shall then be placed in sufficient quantity to choke the top

layer of porous material and will be measured and paid for as porous material.

Where the earth fill is less than 12 in. and tree root protection is specified without

the construction of a tree well, the thickness of the porous material at the tree trunk

shall be increased to the height of the fill and extend outward from the tree truck in

collar form for a distance of 12 in., unless otherwise shown on the plans.

300

No fill shall be placed over the root spread of any tree or shrub that is to be

protected in the above manner until the required depth of porous material has been

placed.

622.15Pipe Underdrains

Pipe underdrains, when shown on the plans or directed, shall be placed to drain

tree wells or porous material for tree root protection. These shall be placed in

accordance with applicable provisions of 718.

622.16Damage to Plants310

During all operations of tree protection, care shall be used to prevent unnecessary

cutting of roots and to prevent scarring or damage to selected trees or shrubs.

Motorized equipment shall not be operated within the drip line of trees unless

specified. Where trimming of branches or cutting of roots is necessary, all cuts shall

be made cleanly with proper sharp tools in accordance with generally accepted

horticultural practices. Scarred areas and cut surfaces 3/8 in. or more in diameter shall

be covered completely with a tree wound dressing.

622.17Grass and Weed Control

Weeding and mowing of grass in and around all group plantings, beds, and320

individual trees and shrubs shall be performed until final acceptance. The grass and

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weed control areas shall be the areas within 2 ft of the outer limits of all group plantings

and shrub beds and within 2 ft of the outer limits of the mulch area of individual shrubs.

For the care of individual trees, the area shall extend to a perimeter centered from the

point itself to 2 ft beyond the stub stakes of the guy wires or 2 ft beyond the mulched

area. In general, these areas shall be in accordance with the plans.

622.18Care, Inspection, and Replacement

Watering, fertilizing, weeding, cultivating, spraying to control insect infestation

and disease, and all other good horticultural practices necessary to maintain the plants

in a living healthy condition shall be performed up to the time for termination of

responsibility for care as set out herein. The plants shall be cared for throughout the

life of the contract. All plants stolen, damaged, or destroyed by fire, automobiles,

vandalism, or any other cause, with the exception of plants damaged or destroyed by

Department maintenance operations, shall be replaced with no additional payment as

soon as practicable. Plants damaged or destroyed by the Department will be replaced

by the Department prior to the date of final acceptance.

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On or about May 1, a spring inspection of initial plantings will be made during

and before the end of the planting season and prior to the beginning of the

establishment period. Plants not living, unhealthy, in a poor growing condition, or

otherwise not meeting the specifications shall be replaced with no additional payment,

prior to May 15 for trees and prior to May 25 for other plants. These replacements

shall be in accordance with all other requirements of the initial planting. All plants

found to be not living or in an unhealthy condition between this replacement and final

inspection shall be removed from the project immediately, as directed, and shall be

replaced after September 15 as detailed below.350

A fall inspection will be made on or about September 15, at which time the

condition of the materials planted within the specified planting season will be

determined. At the time of this inspection, all plants which are found to be dead,

unhealthy, in a poor growing condition, or otherwise not meeting the specifications

will be rejected. Rejected plants shall be removed and disposed of as soon as

practicable and replaced prior to November 15 with no additional payment.

Replacement materials and operations shall be in accordance with the requirements of

the initial planting.

360

A final inspection of the contract will be made as soon as possible after

replacement. All plants shall be cared for and maintained until final inspection and

acceptance.

All seedlings for wildlife habitat shall be in accordance with ASNS Seedling

Trees and Shrubs and will be inspected by a landscape architect within one week of

planting. Spring and fall inspections as described above will not be required. The

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inspection, planting, and maintenance of seedlings as required will constitute final

acceptance.

370

622.19Crown Vetch Plants and Seedlings

The requirements of 622.09 and 622.18 will not apply to these items. Seedlings

shall be fertilized as specified on the plans. Crown vetch plants and seedlings,

including replacements, shall be watered as necessary to keep them in a living, healthy,

and good growing condition.

On or about June 5, these items will be inspected. If it is estimated that 90% or

more of the plan quantity of any individual item in a specific area is living, healthy,

and in a good growing condition, replacements will not be required. If less than 90%

are alive, healthy, and in a good growing condition, all items not meeting these380

requirements shall be replaced. Replacements shall be marked in the same manner as

the original planting, except the markers shall be yellow.

Replacement planting shall be accomplished prior to June 15.

A final inspection will be made on or about the following September 15. If it is

estimated that 90% of the contract quantity of any individual item is living, healthy,

and in a good growing condition, payment will be made for the contract quantity. If

less than 90% meet these requirements, the pay quantity for the item will be

established.390

622.20“Do Not Mow or Spray” Signs and “Do Not Disturb” Signs

These signs shall be placed at the boundaries of areas where seedlings for wildlife

habitat have been placed. The locations and spacing of the signs shall be as shown on

the plans or as directed. The sign shall otherwise be in accordance with 621.06(h).

622.21Method of Measurement

Furnishing and planting trees, shrubs, and vines will be measured by the number

of units of each type and size specified, installed, and accepted. Seedlings for wildlife

habitat, “Do Not Mow or Spray” signs, and “Do Not Disturb” signs will be measured400

by the number installed and accepted. Retaining wall masonry, either mortared or not

mortared as specified, will be measured by the cubic yard. Porous material for root

protection will be measured by the ton.

622.22Basis of Payment

The number of trees, shrubs, and vines of each variety planted, determined as

provided above, will be paid for at the contract unit price per each for plant, of the

type, form, and size shown in the Schedule of Pay Items. Seedlings for wildlife habitat,

“Do Not Mow or Spray” signs, and “Do Not Disturb” signs will be paid for at the

contract unit price per each.410

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Masonry wall and masonry tree well will be paid for at the contract unit price per

cubic yard. Porous material for root protection will be paid for at the contract unit price

per ton.

Payment will be made under:

Pay Item Pay Unit Symbol

Masonry Tree Well .................................................................... CYS420

Masonry Wall ............................................................................ CYS

Plant, Annual ............................................................................. EACH

Plant, Aquatic ............................................................................ EACH

Plant, Biannual .......................................................................... EACH

Plant, Broadleaf Evergreen, Cone, Broad Upright, _____ ........ EACH

size

Plant, Broadleaf Evergreen, Globe, Dwarf, _____ .................... EACH

size

Plant, Broadleaf Evergreen, Spreading, Semispreading, _____ EACH

size430

Plant, Coniferous Evergreen, Cone, Broad Upright, _____ ...... EACH

size

Plant, Coniferous Evergreen, Globe, Dwarf, _____ .................. EACH

size

Plant, Coniferous Evergreen, Prostrate Broad Spreading,

Semispreading, _____ ........................................................ EACH

size

Plant, Deciduous Shrub, _____ ................................................. EACH

size

Plant, Deciduous Tree, Multi-Stem, _____ ............................... EACH440

size

Plant, Deciduous Tree, Single Stem, _____ .............................. EACH

size

Plant, Ground Cover .................................................................. EACH

Plant, Perennial .......................................................................... EACH

Plant, Root Tuber, Corm, Bulb .................................................. EACH

Plant, Rose Grade ...................................................................... EACH

Porous Material for Root Protection .......................................... TON

Seedling ..................................................................................... EACH

Sign, “Do Not Disturb” ............................................................. EACH450

Sign, “Do Not Mow or Spray” .................................................. EACH

The cost of furnishing all materials, labor, and necessary incidentals shall be

included in the cost of the pay items.

Progress payment for planting trees, shrubs, or vines will be based on the premise

that 75% of the work has been completed when such trees, shrubs, or vines have been

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completely planted. The remaining portion of the payment will be for maintenance and

plant replacement.

460