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6.04 Staking Remove stakes as soon as they are no longer needed. Stakes and ties shall be inspected at least twice per year to prevent girdling of trunks or branches,and to prevent rubbing that causes bark wounds and cambium damage. Contractor shall train trees and shrubs off stakes, and adjust stakes and ties as necessary. 6.05 Weed Control Keep basins and areas between plants free of weeds and turf. Avoid frequent soil cultivation that destroys shallow roots. Where there is not adequate plant material to suppress weeds, mulch is preferred to either spray or mechanical removal of weeds. 6.06 Insect& Disease Control Maintain a reasonable control with approved materials. Monitor trees for presence of mistletoe. Remove immediately upon discovery. Consult with County Extension Agents for recommended methods of control and prevention of resprouting. The Contractor shall use a systemic fungicide that controls anthracnose and plant disease, and shall also a systemic control fireblight where necessary. 6.07 Fertilization Once, late in spring, fertilize recently established plants with a soluble nitrate fertilizer. Avoid applying fertilizer to the root ball and base of main stem; rather, spread evenly under plant to drip line. Rates will vary from about a cup of nitrate fertilizer, (depending on nitrogen percentage) around a newly installed small plant to about one half(1/2) lb. of actual nitrogen per inch of trunk diameter measured four feet from the ground for mature trees. Exhibit A-Scope of Work 2022 Rev.4/29/2022 Page 19