Are Cattails Invasive in California?

While Broadleaf Cattail (Typha latifolia) is native to California, the Narrowleaf Cattail (Typha angustifolia) and hybrid species (Typha x glauca) are highly aggressive and often considered invasive behaviorally, even if not officially listed as noxious weeds everywhere.

In altered environments like retention basins, golf course ponds, and HOA lakes with high nutrient runoff, they grow explosively, outcompeting other native flora and destroying open water habitats. Professional removal is often required to restore ecological balance.