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  <br />City of Sunny Isles Beach | Invitation to Bid No. 17‐05‐01  45    <br />  <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 <br />lbs. per application. Fertilizer to be applied in small piles scattered 12” to 48” out <br />from trunk. Contractor shall follow manufacturer’s recommendations for <br />fertilization rates and quantities for all other palms. <br />During the two summer applications (May and August) the 8-2-12 shall be mixed <br />with Sul-Po-Mag or K-Mag in a 1:1 ratio and applied together at the recommended <br />rates. <br />Apply Supplemental Sul-po-mag, K-Mag, manganese sulfate or other <br />micronutrients, as needed, to correct nutritional deficiencies. <br />Palms with reduced rooting space in small planters or beds, or those with extensive <br />ground cover beneath, shall have overall fertilizer rates proportionately reduced <br />by 1/3 to ½ and frequencies increased to 6 times per year (1 time each 2 months) <br />to prevent phytotoxicity. <br />Observation: It shall be the Contractor’s obligation to perform regular monthly <br />inspections of all palms and report to the City any site condition which may be <br />detrimental to the health and vitality of the palms. The base of palm trunks, <br />canopy and palm leaf spears must be observed. Further, the Contractor is