Protected Tree Species: Hesperia vs Rialto
How do protected tree species rules compare between Hesperia, CA and Rialto, CA?
Rialto has fewer restrictions than Hesperia.
Hesperia, CA
San Bernardino County
Hesperia Municipal Code Chapter 16.24 (Protected Plants) protects native Mojave Desert vegetation, with the Western Joshua tree (Yucca brevifolia) as the primary protected species. Joshua trees are additionally protected statewide as a candidate threatened species under the Western Joshua Tree Conservation Act of 2023 (Fish & Game Code §1927 et seq.). Other commonly protected desert species in Hesperia development reviews include Mojave yucca (Yucca schidigera), desert willow (Chilopsis linearis), juniper (Juniperus californica), and Joshua tree clonal groups. A Protected Plant Preservation Plan is required whenever development affects these species.
View full Hesperia rules →Rialto, CA
San Bernardino County
Rialto's municipal code does not designate a list of protected native tree species. Native and sensitive species are instead protected through state law (CEQA, California Fish and Game Code §1600 series for riparian, and federal/state endangered species rules) and through site-specific biological mitigation conditions during entitlement review under Title 18 Zoning.
View full Rialto rules →Key Facts Comparison
| Fact | Hesperia | Rialto |
|---|---|---|
| Primary Protected Species | Western Joshua tree (Yucca brevifolia) | - |
| Other Protected Plants | Mojave yucca, desert willow, California juniper | - |
| State Statute | Fish & Game Code §§1927-1927.6 | - |
| Local Code | Hesperia MC Ch. 16.24 | - |
| Local protected species list | - | None codified in Rialto |
| CEQA review | - | Required for discretionary projects affecting natives |
| Riparian trees | - | CDFW §1602 Streambed Alteration Agreement |
| Nesting birds | - | Feb 1 - Sept 15 survey window typical |
| Joshua tree | - | Protected statewide (Fish & Game Code §§1927-1927.13) |
Highlighted rows indicate differences between cities.
Hesperia FAQ
Are all Joshua trees protected, or just big ones?
All Western Joshua trees are protected under FGC §1927 regardless of size or age. Even seedlings and clonal sprouts qualify.
Is the Mojave yucca protected the same way?
Mojave yucca is protected under Hesperia MC Ch. 16.24's Protected Plant Preservation Plan process for development, but is not on the state Conservation Act list.
Rialto FAQ
Are native oaks protected in Rialto?
There is no Rialto-specific oak ordinance, but CEQA review on discretionary projects typically requires mitigation for native oak removal.
Can I remove a tree with a bird nest in it?
Not if the nest is active - state Fish and Game Code §3503 and the federal MBTA prohibit destruction of active nests. Wait until the chicks have fledged or consult a qualified biologist.
Does the Joshua tree law affect Rialto?
The Western Joshua Tree Conservation Act protects Joshua trees statewide. They are uncommon in Rialto proper but if present on your parcel, a state take permit is required to remove them.
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