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D. Application of insect and disease control materials shall be within the time best suited, according to the manufacturer's specifications and application rates, for the eradication of the insects and diseases. E. Any new or existing plants or soil that are damaged by either the lack of a needed application or the over-application of controlled materials shall be replaced by the Contractor at his expense. F. Snails and slugs shall be controlled by the use of an approved non-arsenical metaldehyde bait as prescribed by a qualified pest control advisor. 5.07 Watering Contractor shall submit proposed cool season and warm season watering schedules. 5.08 Fertilizing Ground cover and ornamental plants shall be fertilized in agreement with the attached frequency schedule. Fertilization application will be based on a soils analysis or the recommendation of the Project Administrator. City staff will be final authority for type and quantity of fertilizer to be applied. 5.09 Mulching The Contractor shall provide and maintain mulch at a depth of three inches (3") in all planting areas which are mulched on the commencement date of this agreement or for which mulch is determined to be necessary by the Project Administrator due to Contractor's replacement of plants. Mulching material shall be organic, chipped wood mulch, or other such material as approved by the City. Mulch shall not be artificially colored. Mulch shall be supplied by the City and will be available at the Operations Yard at 3333 Busch Road. Mulch shall be applied as necessary at the direction of the Project Administrator, and shall be paid for as "Extra Work", except where noted as otherwise such as in the Hanging Flower baskets. SECTION 6. TREE, SHRUB, AND HANGING FLOWER BASKET CARE 6.01 General Maintain trees, shrubs, and hanging flower baskets in a healthy, thriving condition by performing all necessary operations. City will supply baskets and plants for seasonal replanting. 6.02 Watering Plants should not be watered until a moisture check has been made of representative plants in the landscape. Use a probe or other tool to check the moisture in the root ball and the soil surrounding the root ball. Also, a need for water should dictate the frequency of watering by an automatic or manual Fifth Amendment Page 10