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SECTION XI WEED CONTROL A. General Specifications A weed is defined as any plant growing in an area where it interferes with the intent and expectation of the landscape. The City expects all areas to have minimum weed populations due to the frequency of management intervals. 1. All weed control material shall be approved by CR prior to using. 2. All weeds shall be addressed, as indicated, in the frequency of management intervals. The Specifications, in general, indicate monthly weed control with a specified herbicide; however, if required to alter the existing intervals for certain areas for higher quality Holi cultural outcomes (e.g. parking lots, planters, sidewalks, etc.) 3. Weed heights of four (4) inches or greater are an indication of improper weed control treatment and/or intervals. Weedy areas will be brought to the attention of Contractor in order to gauge the reason for the deficiency. Remediation of the problem, if deemed a Contract deficiency, shall be within five (5) working days. 4. String trimming, in the absence of chemical treatment, may be used to control a weed population, but satisfactory weed control is measured by both results and the visual aesthetic of the planted area. 5. Manual weed control may be substituted for chemical weed control in some instances to maintain the proper interval (e.g. windy or rainy conditions which prevent chemical treatment). 6. Damage to plants caused by weed competition and herbicide application shall result in replacement plantings at Contractor's expense. B. Weed Control of Hard Surfaces Contractor shall apply an approved herbicide, in the prescribed interval, to remove and control weeds growing in cracks, expansion joints, patios, gutters (cement/asphalt interface), interior park roads, hardscapes, and other contiguous City landscape-hardscape interfaces, in order to maintain the landscape aesthetic. 1. Areas adjacent to paved surfaces shall have minimum margins of relief provided by chemical weed control. a. Systemic, non -selective weed control of adjacent roadside lawns shall not have in excess of twelve (12) inches of bare soil between the lawn and roadway edge. b. Overspray or excessively bare margins shall require replacement plants to be installed. C. Weed Abatement of Fallow or Undeveloped Lands Contractor shall periodically mow unwanted weeds in open space areas, wild areas, and undeveloped portions of City landscapes and vacant City lots. 1. Contractor shall perform weed abatement processes, which maintain the weed population below eight (8) inches, when required throughout the year, but not to exceed four (4) times annually. 2. Any additional frequencies or areas will be paid for as Additional Extra Work (AEW). RFP 23-151 Landscape Maintenance Services Page 53 of 136