[Tempest1981]

The issue is homes/lots in dry areas with 1-meter-high dead weeds. After the California fires, and how quickly they spread, I can understand the concern.

That said, since the drought, there are thousands of dead lawns, and I've never seen these laws enforced.

[dragonwriter]

They are regularly enforced with notices to clear weeds by a date certain or they will be cleared with costs charged to the property owner, at least in some CA jurisdictions.