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  <br />City of Sunny Isles Beach | Invitation to Bid No. 17‐05‐01  44    <br />  <br />Date Palms, is prohibited (unless otherwise directed by the City). Any spraying on top of palms <br />must occur between the hours of 1:00 AM and 3:00 AM. Avoid spraying when residents are <br />active. <br /> <br />Fertilizer and insect/disease control materials shall be applied at the rates established by accepted <br />horticultural standards, manufacturer’s recommendations, by certified specialists, and as <br />approved by City. Contractor shall provide a list of suppliers for the fertilizer / insect control <br />materials including MSDS (Material Safety Data Sheets) for approval by the City. Review by the <br />Project Manager(s) or Consultant shall not be deemed to be an approval that is contrary to any <br />other applicable law or regulation. The Contractor shall apply additional fertilizer or soil <br />amendments as needed to keep lawn and plants in a healthy, green, weed free and nutrient rich <br />condition, at no additional charge. The following fertilization schedule outlines a minimum of <br />applications. Changes in fertilization rates, methods and composition must be approved by the <br />Project Manager(s) in writing. <br /> <br />3.8.1 LAWN (St. Augustine) <br /> <br />Apply four applications per year at quarterly intervals in February, May, August, <br />and November. Lawn fertilizer shall be in granular form and have a 3-1-2, 4-1-3 <br />(ie; 12-6-8 or 16-4-8) or similar ratio of N, P, and K with at least 50% of the <br />nitrogen in the insoluble or slow-release form. Fertilizer mix shall also contain iron <br />(at least 0.5%) and other micronutrients such as magnesium, manganese, and <br />zinc. A lower nitrogen product can be used during the summer months so as not <br />to substantially increase growth rates. “Weed and Feed” products containing <br />Atrazine herbicide may be used in cooler months. Products should be applied at <br />the rate of 1 pound of actual nitrogen per 1,000 square feet of lawn area. <br />Contractor is responsible to follow manufacturer’s recommendations for <br />fertilization rates and quantities. <br /> <br />3.8.2 TREES <br /> <br />Apply two applications per year in spring and fall of 8-2-12 granular fertilizer or <br />approved equal unless soil conditions or plant species dictate differently. Apply ½ <br />pound per foot of canopy diameter or ½ pound per inch of trunk diameter at <br />breast height, not to exceed 8 to 10 pounds per tree. Contractor is responsible to <br />follow manufacturer’s recommendations for fertilization rates and quantities. <br /> <br />3.8.3 SHRUBS AND GROUNDCOVER <br /> <br />Apply four applications per year at quarterly intervals. Flowering shrubs are to <br />receive applications of granular 8-10-10 SCU with micro-nutrients supplemented <br />with liquid 16-4-8 with micro-nutrients unless soil conditions or plant species <br />dictate differently. Non-flowering shrubs are to receive applications of granular <br />and liquid 16-4-8 with micro-nutrients. All Ixora species shall receive TRI-NITE