HomeMy WebLinkAbout13120020 Landscape Plan Stamped Approved L1.3STORMWATER MANAGEMENT AREAS & LANDSCAPING SPECIFICATIONS
1.1 SITE PREPARATION
When feasible, prior to mass earthwork operations, stake the limits of the proposed stormwater management areas &
landscape planting areas and do not allow heavy equipment to run over the soil in these locations. Soil compaction is very
critical in the functioning of stormwater management areas.
Do not clear vegetation until necessary to help minimize site erosion.
Place tree protection barriers around the drip line of all trees that are to remain. There shall be no storage of materials,
heavy equipment or vehicles within the drip line of trees.
1.2 MATERIALS
1.2.1 SUBMITTAL REQUIREMENTS
Contractors shall submit to engineer /landscape architect for review and approval all proposed materials to be used within
the stormwater management areas and landscape areas prior to purchase. Submittals include but are not limited to:
• Planting soil composition
• Compost /Mulch
• River Cobble
• Turf Grass Sod and Seed
• Plant lists (Woody and herbaceous materials)
• Herbicides and Pre — Emergent Herbicides
1.2.2 PLANTING SOIL
The soil shall be a uniform, well blended mix, free of stones, stumps, roots or other similar objects larger than two inches.
No other materials or substances shall be mixed or dumped within the bio— retention area that may be harmful to plant
growth, or prove a hindrance to the planting or maintenance operations. The soil mix shall be free of Bermuda grass,
Quack grass, Johnson grass, or other noxious weeds. The planting soil for bio— retention facilities shall consist of a mixture
of sand or crushed glass cullet of equivalent grade, topsoil, and compost components, to obtain an engineered soil mix
meeting the following specifications:
• USDA Texture class: sandy loam or loamy sand. Mineral fraction consists of no less than 40% well — graded sand or
glass cullet and no greater than 10% clay (dry weight basis)
• Organic content: 20% (dry weight basis)
• pH: 5.5 — 7.0
• Soluble Salts (Salinity): less than 500 mg /kg (500ppm)
• Phosphorous: soil p —index should be between 15 and 40
• Permeability: Minimum 0.50 inches /hour
Volumetric proportions of the components making up the bio— retention soil mix shall be as follows:
• Sand: 50% by volume
• Compost: 20% by volume
• Topsoil: 30% by volume
Compost shall be finished (aged), and composted material shall be of plant origin. Compost shall have a C:N ratio S
25:1.
If the planting soil does not meet the above characteristics, then it shall either be adjusted to meet the criteria or
removed and replaced with an acceptable planting soil. See 1.3 Testing Requirements.
Existing topsoil on site may be amended to meet the specifications of the planting soil mix. The existing topsoil shall be
tested for organic content, grain size analysis and permeability to identify necessary amendments.
Planting soil shall not be incorporated into the Work until it is approved by the engineer /landscape architect.
1.2.3 MULCH MATERIAL
A mulch layer shall be provided on top of the planting areas, to the depth OF 2 -3 inches. The material shall consist of
finished (aged) leaf compost mulch, and shall be well mixed and homogenous, uniform in color and free of foreign material
and viable plant seeds. The mulch material shall have no visible free water and produce no dust when handled. It shall
meet the following criteria:
• 90% of material passing W screen
• Organic content: 35— 65% (dry weight basis)
• pH: 6.0 — 8.0
1.2.4 TURF GRASS SOD AND SEED
1.2.4.1 TURF GRASS SOD
See plans for locations. Turf grass sod shall be a mixture within the following ranges:
• Kentucky Bluegrass: 50 -100%
•Fine Fescue: 0 -30%
• Turf Type or Rhizomatous Tall Fescue: 50 -100%
Turf grass sod shall be of good quality, free of weeds, disease and insects and of good color and density. Turf grass sod
shall be machine —cut at a minimum uniform soil thickness and grown in central Indiana.
1.2.4.2 TURF GRASS SEED /COVER CROP
See plans for seed mixture(s) and rate(s). No substitutions shall be allowed without approval from the ecological consultant.
Seed shall be clean, delivered in original unopened packages, and bearing an analysis of the contents. Guaranteed 98
percent pure and to have a minimum germination rate of 90 percent; within 1 year of test.
Temporary cover shall be annual rye grass. Under no circumstances shall the site be stabilized with winter rye, grain rye,
or winter wheat. These plants produce toxins that inhibit prairie seed germination.
1.2.5 LIVE PLANT MATERIAL
1.2.5.1 TREES & SHRUBS
General: Furnish nursery—grown plants true to genus, species, variety, cultivar, stem form, shearing, and other features
indicated in Plant Schedule or Plant Legend shown on Drawings and complying with ANSI Z60.1; and with healthy root
systems developed by transplanting or root pruning. Provide well— shaped, fully branched, healthy, vigorous stock, densely
foliated when in leaf and free of disease, pests, eggs, larvae, and defects such as knots, sun scald, injuries, abrasions,
and disfigurement.
Root —Ball Depth: Furnish trees and shrubs with root balls measured from top of root ball, which shall begin at root
flare according to ANSI Z60.1. Root flare shall be visible before planting.
No bare root material shall be used unless specified on the plans
Containerized Plant Material: Provide healthy, disease —free plants of species and variety shown or listed, with
well — established root systems reaching to sides of the container to maintain a firm ball, but not with excessive root
growth encircling the container. Provide only plants that are acclimated to outdoor conditions before delivery.
Plant material and quantities for stormwater management areas and landscape areas shall be taken from the plans. Any
plant material substitutions shall require approval from the engineer /landscape architect.
1.2.5.2 LIVE PLANTS
See plans for approved herbaceous plant lists. All native plants must be of wild ecotype. No hybrids, cultivars or
substitution may be included without approval from the engineer /landscape architect Local genotypes are adapted to
local soil and climate conditions and shall be used whenever possible.
1.2.6 HERBICIDES AND PRE— EMERGENTS
Herbicide to be used in stormwater management areas consist of glyphosate herbicides approved for use around water, such
as Rodeo.
1.3 TESTING REQUIREMENTS
1.3.1 PLANTING SOIL TESTING
Soil tests shall be performed for every 500 cubic yards of planting soil, with the exception of pH and organic content
tests, which are required only once per stormwater management BMP.
The planting soil shall be tested and shall meet the following criteria:
• pH range: 5.5 — 7.0
• organic matter. 5 — 10% (dry weight basis)
• magnesium: minimum 35 Ibs /acre
• phosphorus (phosphate — P205, Bray 1): shall not exceed 75 Ibs. /acre
• potassium (potash — K20): minimum 85 Ibs /acre
• soluble salts not to exceed 500 ppm
Al stormwater management areas shall have a minimum of one test per bioretention basin and a minimum of one soil test
per 500 cubic yards. Each test shall consist of both the standard soil test for pH, phosphorus, and potassium and
additional tests of organic matter, and soluble salts. A textural analysis is required from the site stockpiled topsoil. If
topsoil is imported, then a texture analysis shall be performed for each location where the top soil was excavated. Should
the pH fall out of the acceptable range by no greater than 0.2, it may be modified (higher) with lime or (lower) with iron
sulfate plus sulfur. x,.■.,.,,���
APPROVED CITY OF CARMEL
URBAN FORESTER
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DATE
1.4 INSTALLATION
1.4.1 PLANTING SOIL
Installation of soils must be completed in a manner that will ensure preservation of the infiltrative capacity of the
underlying soils. The moisture content of the soil shall be low enough to prevent clumping and compaction during
placement.
To prevent compaction within the limits of the basins, only hand laborers, small excavation hoes with wide tracks, light
equipment with turf tires, marsh equipment or wide —track loaders may be used. No heavy equipment shall be used within
the perimeter of the stormwater management BMP facility before, during, or after the placement of the planting soil.
It is very important to minimize compaction of both the base (in —situ soil) of the stormwater management areas and the
required backfill. Re— fracture subgrade soils that have been compacted or smeared by raking, disking or tilling to a
minimum depth of 12 inches. Soil surfaces shall be scarified by manually raking to aerate and reduce soil compaction.
Soil shall be placed in 6 inch loose depth lifts. Lifts are performed in order to reduce the possibility of excessive
settlement. Soil shall be lightly hand — tamped or compacted with a water — filled landscape roller, to reduce potential for
excessive settling. No other mechanical equipment shall be used to compact the planting soil or underlying soils. Lifts
may also be watered to encourage natural compaction. Overfill to allow for natural settlement.
Uniformly grade planting soil to achieve a smooth surface, free of irregular surface changes. Do not over —work or
excessively compact planting soil. Grade to cross sections, thickness and elevations indicated on plans. Settling of soil
by walking on surface and working with hand equipment is acceptable.
1.4.2 TURF GRASS
1.4.2.1 SEQUENCING AND SCHEDUUNG
Turf grass shall be installed following final grading activities and all other planting installations.
1.4.2.2 SITE PREPARATION
Verify the depth and quality of the topsoil and that the topsoil has been placed according to specifications or exists as
a current site condition.
Restore areas if eroded or otherwise disturbed after finish grading and before installation. Proceed with installation only
after unsatisfactory conditions have been corrected.
All weeds and grosses shall be dug out by the roots and disposed of off —site
Rake so all areas drain and are of uniform slope.
Remove all trash and stones exceeding %' in diameter from area to a depth of 2' prior to preparation and
installution of sod. Removal of stones and debris shall be done at the time of installation. Repair topsoil disturbed by
removal of stones and debris.
1.4.2.3 PLANTING
Turf grass shall be placed on prepared soil that has been watered and is still moist. Turf grass sod shall be laid with
tight joints, rolled, and thoroughly watered. River water, where available and allowed by federal, state and local
authorities, is suitable for irrigation.
When installation occurs on a sloping surface where erosion may be a problem, turf gross sod shall be laid with
staggered joints and secured by pegging.
1.4.3 PERMANENT TURF GRASS SEED
1.4.3.1 SEQUENCING AND SCHEDUUNG
Perform the seeding work between 1 March and 15 May or between mid — August and 1 October, unless otherwise
approved by the Architect /Engineer; and at such times that the seeding will not be damaged by freezing temperatures,
rain, or high winds.
1.4.3.2 SITE PREPARATION
Verify the depth and quality of the topsoil and that the topsoil has been placed according to specifications or exists as
a current site condition.
Restore areas if eroded or otherwise disturbed after finish grading and before installation. Proceed with installation only
after unsatisfactory conditions have been corrected.
All weeds and grasses shall be dug out by the roots and disposed of off —site.
Rake topsoil thoroughly by running in two directions at right angles over the entire surface to be planted. Rake so all
areas drain and are of uniform slope.
Remove all trash and stones exceeding %' in diameter from area to a depth of 2' prior to preparation and
installation of sod. Removal of stones and debris shall be done at the time of installation. Repair topsoil disturbed by
removal of stones and debris.
1.4.3.3 PLANTING
Sow grassed areas evenly with a mechanical spreader at the minimum rate as specified on the plans, roll to cover
seed and water with fine spray. Wet soil at a rate of approximately 120 gallons per 1,000 square feet. River water,
where available and allowed by federal, state and local authorities, is suitable for irrigation.
Method of seeding may be varied at discretion of Contractor on his own responsibility to establish a smooth, uniformly
grassed area.
1.4.4 TREES, SHRUBS AND VINES
1.4.4.1 SEQUENCING AND SCHEDUUNG
Planting Time: Proceed with, and complete landscape work as rapidly as portions of site become available, working
within seasonal limitations for each kind of landscape work required.
Planting seasons shall be as follows:
Deciduous Trees: Primary Planting Time March 15th to June 30th, and Secondary Planting Time September 1st to
December 1st, unless noted otherwise on drawings.
Shrubs: Primary Planting Time March 15th to June 30th, and Secondary Planting Time September 1st to November 1st,
unless noted otherwise on drawings.
If weather conditions within these seasons are not favorable to plant health and establishment at the time of planting
(e.g. drought), planting shall be delayed until favorable conditions resume or further actions shall be taken to ensure
healthy establishment (e.g. irrigation). It is the responsibility of the contractor to ensure survivability during the
warranty period.
1.4.4.2 SITE PREPARATION
Planting Pits and Trenches: Excavate circular planting pits with sides sloping inward at a 45— degree angle.
Excavations with vertical sides are not acceptable. Trim perimeter of bottom leaving center area of bottom raised
slightly to support root ball and assist in drainage away from center. Do not further disturb base. Ensure that root
ball will sit on undisturbed base soil to prevent settling. Scarify sides of planting pit smeared or smoothed during
excavation.
1. Excavate approximately two times as wide as ball diameter for shrubs and three times as wide for trees.
2. Do not excavate deeper than depth of the root ball, measured from the root flare to the bottom of the root ball.
1.4.4.3 PLANTING
Before planting, verify that root flare is visible at top of root ball according to ANSI Z60.1.
Remove stem girdling, broken or kinked roots. Remove injured roots by cutting cleanly; do not break.
Set stock plumb and in center of planting pit or trench with root flare 1 -2 inches above adjacent finish grades. To
prevent settling of the root ball, root ball should be placed on undisturbed soil only.
1. Use planting soil as specified in 1.4.2 for backfill.
2. Balled and Burlapped: After placing some backfill around root ball to stabilize plant, carefully cut and remove
burlap, rope, and wire baskets from tops of root balls and from sides. Where practical remove burlap, rope and
wire baskets from under root balls. Remove pallets, if any, before setting. Do not use planting stock if root ball
is cracked or broken before or during planting operation.
3. Container — Grown: Carefully remove root ball from container without damaging root ball or plant
4. Fabric Bag —Grown Stock: Carefully remove root ball from fabric bag without damaging root ball or plant. Do not
use planting stock if root ball is cracked or broken before or during planting operation.
5. Loosen pot —bound roots and remove or cut any circling and girdling roots.
6. Do not place root ball directly on any underdrain structures. If root ball is larger than soil depth, adjust root ball
such that it is adjacent to but not resting on any underdrain structures.
7. Backfill around root ball in layers, tamping to settle soil and eliminate voids and air pockets. When planting pit is
approximately one —half filled, water thoroughly before placing remainder of backfill. Repeat watering until no more
water is absorbed.
8. Continue backfilling process. Water again after placing and tamping final layer of soil.
9. 2-•3 inches of mulch material (per 1.2.3) to be placed uniformly on top of soil after plant material is installed.
See details on plans for plant installation.
When planting on slopes, set the plant so the root flare on the uphill side is flush with the surrounding soil on the
slope; the edge of the root ball on the downhill side will be above the surrounding soil. Apply enough soil to cover
the downhill side of the root ball.
Water all trees and shrubs deeply and thoroughly upon installation and as described in section 1.7.3 to maintain health
during the first year of establishment.
Stake tree in southwesterly direction. Ties should be loose fitting and allow for natural sway. Remove after one year.
Minimize pruning to dead or broken branches.
Place 4' perforated corrugated plastic pipe (CPP) around tree for protection from deer. Cut length to height of tree
from root flare to first branch and slice lengthwise. (Not necessary in urban areas) Contractor shall be responsible
for replacement of any plant material damaged by wildlife if protective CPP is not installed.
1.4.5 LIVE NATIVE HERBACEOUS PLANTS
1.4.5.1 SEQUENCING AND SCHEDUUNG
Installation of plugs shall be performed between April 15 and August 15 and thereafter at Contractor's discretion based
upon current weather patterns. Contractor shall be responsible to replace any plugs that do not survive as a result
of winter heaving.
If native seed is installed with the plugs and has not germinated within the plug planting area, no pre— emergent
herbicides shall be applied during the six (6) months prior to installation and for at least one (1) year following
installation.
If native seed is NOT installed and will not be installed within the plug planting area, pre— emergent herbicides shall be
applied immediately following the plug installation and as needed to control seasonal weeds for at least one (1) year
following installation.
1.4.5.2 SITE PREPARATION
Verify that the surrounding uplands have been stabilized
Finish Grading: Grade planting areas to a smooth, uniform surface plane with loose, uniformly fine texture. Grade to
within plus or minus one (1) inch of finish elevation. Roll and rake, remove ridges, and fill depressions to meet finish
grades. Umit fine grading to areas that can be planted in the immediate future.
Restore areas if eroded or otherwise disturbed ofter finish grading and before planting. Verify that the site is clean
and free of debris. Proceed with installation only after unsatisfactory conditions have been corrected.
Two weeks (14 days) prior to installation, apply a glyphosate herbicide approved for use around water (Rodeo) to kill
existing or remaining lawn grasses and other non— favorable vegetation.
Verify the depth and quality of the topsoil and that the topsoil has been placed according to specifications or exists
as a current site condition.
Do not apply any fertilizer.
1.4.5.3 PLANTING
Use an auger or other appropriate tool to excavate planting holes in a staggered pattern per the planting plan. Refer
to landscape drawings for specific spacing requirements.
Plant plugs level with final soil grade. Be certain that soil is placed around the roots and firmed into place. Under
no circumstances is soil to be mounded up to cover roots that are not planted at the appropriate depth.
1.5 QUALITY OF WORKMANSHIP
1.5.1 PERMANENT TURF GRASS SOD /SEED
All workmanship and finishes shall be first class in all respects, and in accordance with the best practice. The drawings
and specifications describe the scope of work but do not show or describe all work or material that may be required for
full performance and completion of the contract documents. On the basis of the scope shown herein, Contractor shall
furnish and install all parts required for the proper execution and completion of the work. Any item included will require
the Contractor to furnish and install all parts needed for a complete installation.
1.5.2 TREES & SHRUBS
Al workmanship and finishes shall be first class in all respects, and in accordance with the best practice. The drawings
and specifications describe the scope of work but do not show or describe all work or material that may be required for
full performance and completion of the contract documents. On the basis of the scope shown herein, Contractor shall
furnish and install all parts required for the proper execution and completion of the work. Any item included will require
the Contractor to furnish and install all parts needed for a complete installation.
1.5.3 LIVE NATIVE HERBACEOUS PLANTS
All workmanship and finishes shall be first class in all respects, and in accordance with the best practice. The drawings
and specifications describe the scope of work but do not show or describe all work or material that may be required for
full performance and completion of the contract documents. On the basis of the scope shown herein, Contractor shall
furnish and install all parts required for the proper execution and completion of the work. Any item included will require
the Contractor to furnish and install all parts needed for a complete installation.
Installer Qualifications: The submitting bidders shall be, and have been, actively and directly engaged in plug installation
for a period of two (2) or more years. Provide proof of five (5) or more successful plug installations.
Installer's Field Supervision: Require Installer to maintain an experienced full —time supervisor on project site when planting
is in progress.
Qualified bidders shall possess specialized equipment for working in and around water, including but not limited to a small
boat, hip waders, or floatation life preservers to be worn while working in water.
Certification of Plugs: Require vendor to provide certification of each species and state both botanical and common
name.
1.6 GUARANTEE AND WARRANTY
1.6.1 PERMANENT TURF GRASS SOD
All work in this Section shall be guaranteed against any and all defects in workmanship and materials appearing within a
period of one (1) year after final completion of d site work and acceptance of the work by the Owner. Contractor shall
replace, without additional expense to the Owner, any materials and workmanship that show defects within said period, with
finished and new materials.
Evaluate establishment of permanent turf grass sod for percent survivability thirty days prior to the end of the first
complete growing season and prior to the release of any maintenance or guarantee obligations.
Success Criteria: Survivability must be 95% or greater. Dead material in excess of 5% of all sodded areas shall be
replaced by the Contractor prior to the end of the warranty period without additional expense to the Owner.
1.6.2 PERMANENT TURF GRASS SEED
All work in this Section shall be guaranteed against any and all defects in workmanship and materials appearing within a
period of one (1) year after final completion of Id s ?te work and acceptance of the work by the Owner. Contractor shall
replace, without additional expense to the Owner, any materials and workmanship that show defects within said period, with
finished and new materials.
Evaluate establishment of permanent turf grass seed for percent survivability thirty days prior to the end of the first
complete growing season and prior to the release of any maintenance or guarantee obligations.
Success Criteria: 75% of seeded area shall be covered with vegetation. 25% of the vegetation shall be permanent matrix,
and less than 5% invasive species. 50% of the species within the permanent matrix shall be present.
1.6.3 TREES & SHRUBS
All work in this Section shall be guaranteed against any and all defects in workmanship and materials appearing within a
period of one (1) year after final completion of all installation work and acceptance of the work by the Owner.
Contractor shall replace, without additional expense to the Owner, any materials and workmanship that show defects within
said period, with finished and new materials.
1.6.4 NATIVE HERBACEOUS PLUGS
All work in this Section shall be guaranteed against any and all defects in workmanship and materials appearing within a
period of one (1) year after final completion of all installation work and acceptance of the work by the Owner.
Contractor shall replace, without additional expense to the Owner, any materials and workmanship that show defects within
said period, with finished and new materials.
All plugs shall exhibit vigorous growth and be thoroughly rooted by the end of first complete growing season and prior to
the release of any maintenance or guarantee obligations. For installations occurring prior to June 1 the end of the first
complete growing season would be in October (or at the first hard freeze) of the installation year. For installations
occurring on and after June 1 the end of the first complete growing season would be in October (or at the first hard
freeze) of the following year.
Success Criteria: Survivability must be 95% or greater. Dead plant material in excess of 5% of all plugged material shall
be replaced by the Contractor prior to the end of the warranty period without additional expense to the Owner.
1.7 MAINTENANCE REQUIREMENTS
1.7.1 PERMANENT TURF GRASS SOD
Initial Maintenance Service: Provide maintenance by skilled employees of landscape Installer. Maintain as required in
below.
Begin maintenance of lawns immediately after sod is installed in each area iand continue until acceptable lawn is
established, but not less than 60 days after date of Substantial Completion.
If full maintenance period has not elapsed before the end of planting season, or if lawn is not fully established,
continue maintenance during the next planting season.
Maintenance includes watering, fertilizing, weeding, mowing, trimming, replanting, and other operations to provide a
uniform, weed free, smooth lawn.
Watering
Week 1: In the absence of adequate rainfall, watering shall be performed daily or as often as necessary during
the first week and in sufficient quantities to maintain moist soil to a depth of at least four (4) inches.
Week 2 and beyond: Water turf grass sod as required to maintain adequate moisture in the upper four (4) inches
of soil. Avoid application of too much water — turf grass sod should not be continually saturated.
Mowing
Turf grass sod height shall be maintained betvr�en two (2) and six (6) inches or as specified by the Owner. Not
more than 1/3 of the grass leaf shall be removed py the initial cutting or subsequent cuttings.
1.7.2 PERMANENT TURF GRASS SEED
Initial Maintenance Service: Provide maintenance by skilled employees of landscape Installer. Maintain as
required in below.
Begin maintenance of lawns immediately after each area is planted and continue until acceptable lawn is
established, but not less than 60 days after date of Substantial Completion.
If full maintenance period has not elapsed before the end of planting season, or if lawn is not fully
established, continue maintenance during the next planting season.
Maintenance includes watering, fertilizing, weeding, mowing, trimming, replanting, and other operations to
provide a uniform, weed free, smooth lawn. Ensure cover crop seed germinates within two (2) weeks of
planting. If dormant seeding, ensure cover crop germinates at the start of the growing season.
Watering
Thoroughly water all permanently seeded areas after the seed has germinated for a period of one (1)
month.
Apply a total rate of 120 gallons per 1000 square feet (12.2 m3 /1000 m2) in at least two (2)
applications spread over seven (7) days. Apply the water under pressure with a nozzle that produces a
spray that will not dislodge the seed, seedlings, or mulch material. If % inch (13 mm) or greater of
rainfall has occurred within the first seven (7) day period, the Installer may delay or omit the secondary
application, depending on weather conditions.
Mowing
Once established, turf grass height shall be maintained between two (2) and six (6) inches or as
specified by the Owner. Not more than 1/3 of the grass leaf shall be removed by the initial cutting or
subsequent cuttings.
1.7.3 TREES & SHRUBS
Initial Maintenance Service: Provide maintenance by skilled employees of landscape Installer. Maintain as
required in below. Begin maintenance immediately after plants are installed and continue until plantings
are acceptably healthy and well established but for not less than maintenance period below.
Maintenance Period for Trees and Shrubs: one year
Maintain plantings by pruning, watering, weeding, mulching, resetting to proper grades or vertical position,
and performing other operations as required to establish healthy, viable plantings. Spray or treat as
required to keep trees and shrubs free of insects and disease.
Prune trees, shrubs, and vines according to standard professional horticultural and arboricultural practices.
Do not cut tree leaders; remove only injured, dying, or dead branches from trees and shrubs; and prune
to retain natural character.
Irrigate the plants as necessary to maintain rootball moisture throughout the first growing season.
Surrounding soil moisture is not a suitable substitute for rootball moisture evaluation. Use of river water,
where available and allowed by federal, state and local authorities, is acceptable for irrigation purposes.
Fill in as necessary soil subsidence that may occur because of settling or other processes. Replace
mulch materials damaged or lost in areas of subsidence or where moved by stormwater flows from large
rainfall events.
Apply treatments as required to keep plant materials, planted areas, and soils free of pests and
pathogens or disease. Use practices to minimize the use of pesticides and reduce hazards.
Protect plants from damage due to landscape operations and operations of other contractors and trades.
Maintain protection during installation and maintenance periods. Treat, repair, or replace damaged
plantings.
After the first growing season, evaluate the health and structure of the plant and provide structural
pruning only as necessary.
1.7.4 LIVE NATIVE HERBACEOUS PLANTS
Initial Maintenance Service: Provide maintenance by skilled employees of landscape Installer. Maintain as
required in below. Begin maintenance immediately after plugs are installed and continue until plantings
are acceptably healthy and well established but for not less than maintenance period below.
Maintenance Period for live native herbaceous plants: one year
It is important to monitor the native plug areas for invasive plant species, which must be controlled early.
Invasive species can aggressively colonize a site. When they are recognized in the earn stages of
establishment and removed, invasive species can be successfully managed. Any invasive species should be
promptly removed from teh site without disturbing the roots of the native plugs that are colonizing.
Weed Control
Throughout the first year, treat any weeds, non — native, or invasive species with glyphosate herbicide
approved for use around water (Rodeo) by spot — spraying or other means that minimize incidental
herbicide drift. Herbicide application should be conducted on, windless days so that the chemical does
not spread or volatize. Re —seed and /or replant any die —back areas resulting from incidental treatment
with herbicide. An Indiana invasive species list may be found here:
http:// www. invasivespeciesinfo .gov /unitedstates /in.shtml. The following species are deemed particularly
detrimental to native plantings. This list is not exhaustive and other invasive species may also require
removal or treatment: Cattails (Typha species), Common Reed (Phragmites australis), Purple Loosestrife
(Lythrum salicaria), Canada Thistle, Curly Dock, Wild Thistle, Sweet Clover and Queen Anne's Lace.
Do not mow any live native herbaceous plant areas.
DWN BY: JLS
CHKD. BY:
AER
SCALE:
NITS
DATE:
07/25/2014
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