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heavy. Maximum shrub height should not exceed 8 feet. Shrubs shall be pruned in order to provide the following vehicle sight distance clearances in all directions at intersections: Posted Speed Limit Vehicle Sight Distance 25 mph 150 ft 30 mph 200 ft 35 mph 250 ft 40 mph 300 ft 45 mph 375 ft 5-03 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 shrubs off stakes and adjust stakes and ties as necessary. 5-04 Weed Control Keep basins and areas between plants free of weeds and turf. Avoid frequent soil cultivation that destroys shallow roots. 5-05 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 re-sprouting. A. The Contractor shall use a dormant spray fungicide that controls anthracnose and plant disease and shall also spray to control fire-blight. B. Scheduled spraying shall be applied twice annually to all trees and shrubs. The first spraying shall be accomplished while the trees or shrubs are in full dormancy. The second spraying shall be applied just as the buds start to open. Contractor's choice of specific spraying times must be approved by the City. 5-06 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 4 feet from the ground for mature trees. SECTION 6. TREE CARE 6-01 General Page 14