Native Plants: Altadena vs South Gate
How do native plants rules compare between Altadena, CA and South Gate, CA?
Altadena and South Gate have similar restriction levels.
Altadena, CA
Los Angeles County
Native and drought-tolerant landscaping is encouraged in unincorporated LA County per MWELO and state water conservation mandates. CA Gov Code 65595 prohibits banning native plant gardens. Coastal areas specifically require native species for erosion control landscaping.
View full Altadena rules →South Gate, CA
Los Angeles County
South Gate does not restrict native or drought-tolerant landscaping; state law affirmatively protects it. California Civil Code § 4735 prohibits HOAs from banning low-water plants, and Government Code § 53087.7 plus AB 1572 (2023) further restrict watering of decorative turf at public/commercial sites. South Gate must comply with MWELO (CCR Title 23 § 490 et seq.) for new and rehabilitated landscapes meeting the threshold.
View full South Gate rules →Key Facts Comparison
| Fact | Altadena | South Gate |
|---|---|---|
| Encouraged | MWELO and AB 1881 | - |
| Local Bans | Prohibited by state law | - |
| Coastal Areas | Native species required | - |
| Water District | May offer rebates | - |
| State standard | - | MWELO — Cal. Code Regs. tit. 23 § 490 et seq. |
| Threshold (full doc) | - | ≥ 2,500 sq ft new/rehabbed landscape |
| HOA protection | - | Cal. Civ. Code § 4735 (drought-tolerant plants) |
| Local enforcement | - | South Gate Building Division (Ch. 9.02) |
Highlighted rows indicate differences between cities.
Altadena FAQ
Does LA County require native plants?
No. The county doesn't mandate native plants but encourages them through MWELO's reduced irrigation requirements. Native and drought-tolerant plants require less water, making it easier to meet water efficiency standards.
What is MWELO?
The Model Water Efficient Landscape Ordinance requires new landscaping projects over 500 sq ft to meet maximum applied water allowance standards. It applies to new construction, rehabilitated landscapes, and large new plantings.
Where can I get help with native plant landscaping?
Contact your local water district for free native plant guides and rebates. The Theodore Payne Foundation and the California Native Plant Society have LA-area chapters with resources. Many nurseries specializing in California natives operate in LA County.
South Gate FAQ
Can my HOA force me to keep a lawn?
No. Civil Code § 4735 prohibits HOAs from banning low-water-using plants or requiring lawn during a state-declared drought emergency.
Does MWELO apply to my front-yard redo?
If the project requires a permit and the landscaped area is ≥ 500 sq ft (residential), MWELO efficiency standards apply. ≥ 2,500 sq ft requires the full Landscape Documentation Package.
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