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<br />City of Sunny Isles Beach | ITB 18-03-03 Right-of-Ways and Facilities Landscape Maintenance Services 49 <br /> <br />to substantially increase growth rates. “Weed and Feed” products containing <br />Atrazine herbicide may be used in cooler months. P roducts 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 <br />(or equivalent) w/minor elements fertilizer. Contractor is responsible to follow <br />manufacturer’s recommendations for fertilization rates and quantities. <br /> <br />Due to lack of above ground irrigation on Collins Avenue median, plant material is <br />to receive four applications per year (Every three months) of liquid 16 -4-8 with <br />micro-nutrients (no granular fertilizer is to be used). <br /> <br />3.8.4 SEASONAL COLOR <br /> <br />Apply one initial and one “mid-term” application of Nutricote total seventy (70) day <br />13-3-13 fertilizer for each seasonal color planting. <br /> <br />Apply Snapshot pre-emergent herbicide to seasonal color planting bed at each <br />seasonal color change. <br /> <br />3.8.5 PALMS <br /> <br />Palms shall be fertilized four times per year in the months of February, May, <br />August, and November. Fertilizer to be a granular “Palm Special” 8-2-12 product, <br />with at least 50% of the nitrogen and potassium in the slow -release form, <br />preferably sulfur-coated. Fertilizer mix shall also contain micronutrients, <br />specifically magnesium (kieserite, at least 3%), manganese sulfate (at least 1%), <br />chelated iron (Trachelene, at least 1%), and trace amounts (less than 1%) of <br />boron (boric acid), copper sulfate, and zinc sulfate. For Medjool and Sylvester Date <br />Palms, apply 6-7 lbs. per application and for Canary Island Date Palms apply 8-9