The City of Napa does not mandate native-plant landscaping on existing residential property, but California's Model Water Efficient Landscape Ordinance (MWELO) at 23 CCR §490 et seq. requires water-efficient design (often native or low-water Mediterranean species) for new and rehabilitated landscapes meeting size thresholds. Napa's Cash for Grass and Smart Rebates programs through Bay Area Water Supply and Conservation Agency provide rebates for converting turf to drought-tolerant or native landscaping. AB 1572 phases out potable-water irrigation of nonfunctional turf on nonresidential property by 2027 and on residential property by 2031.
Napa's approach to native-plant landscaping combines voluntary education with state-mandated water-efficient design for new landscapes. The City of Napa's Water Conservation programs (https://www.cityofnapa.org/583/Water-Conservation) include Cash for Grass turf-replacement rebates, irrigation-controller rebates, and free residential and commercial landscape surveys. The Water Division partners with the Bay Area Water Supply and Conservation Agency (BAWSCA) on regional Smart Rebates. California's Model Water Efficient Landscape Ordinance (MWELO) at 23 CCR §490 et seq. (https://water.ca.gov/Programs/Water-Use-And-Efficiency/Urban-Water-Use-Efficiency/Model-Water-Efficient-Landscape-Ordinance) requires water-efficient landscape design for new and rehabilitated landscapes meeting size thresholds (typically over 500 sq ft residential rehabilitation or 2,500 sq ft new construction subject to discretionary review), including a Maximum Applied Water Allowance, hydrozoning, and a soil-management plan. The California-Friendly and Native Plant lists referenced by MWELO and California Native Plant Society guide species selection (oaks, manzanita, ceanothus, sages, California poppy, deer grass, native bunchgrasses). AB 1572 (Health and Safety Code §115943 et seq., signed 2022) prohibits the use of potable water for irrigation of nonfunctional turf on commercial, industrial, institutional, and HOA common-area property in phases beginning January 1, 2027 (CII) and January 1, 2031 (HOAs), with the State Water Board adopting implementing regulations. Napa County's Right to Farm ordinance (County Code Chapter 2.94) and California Civil Code §3482.5 protect sound agricultural practices on agriculturally zoned parcels, including vineyard cover-cropping and native-meadow planting. The Napa County Resource Conservation District provides technical support for native-habitat restoration. Napa's Weed and Rubbish Abatement chapter excludes properly maintained ornamental plantings from the weed definition, providing a clear path for cultivated native or pollinator gardens.
The City of Napa does not penalize homeowners for choosing non-native landscaping on existing parcels. New or substantially rehabilitated landscapes that fall under MWELO thresholds must comply with 23 CCR §490 et seq.; the Building Division reviews the Landscape Documentation Package at permit issuance and may withhold Certificate of Occupancy for non-compliant projects. AB 1572 violations on nonfunctional turf accrue State Water Board penalties beginning at the applicable phase-in date. Neglected lots may still be cited under the Weed and Rubbish Abatement chapter at the four-inch height standard, but the Code excludes properly tended ornamental shrubbery, flowers, vegetables, pastureland, woodland, and land under cultivation - providing a clear pathway for maintained native or pollinator plantings.
Napa, CA
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Napa, CA
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Napa, CA
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Napa, CA
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Napa, CA
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Napa, CA
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