In Boarts v. Imperial Irrigation District (1947) 80 Cal.App.2d 574, the court considered liability for damage to an adjoining landowner caused by a natural condition of the property: seeds from weeds on defendant's property infested plaintiff's property. "In the case before us nothing was brought onto the land of defendant. The weeds were a natural growth. The wind carried the seeds to plaintiffs' property. No negligence of defendant appears and no public nuisance dangerous to the public safety, health, or welfare was proved. As it seems to be established by the cases we have cited that no duty rested on defendant to cut or destroy the weeds, plaintiffs cannot recover." ( Id. , at p. 578.)