PACE Turf - Turfgrass Information Center

Weather conditions leading to rust outbreak

Rusts, caused by the fungi Puccinia and Uromyces, typically occur where low fertility, shade or other stresses occur. Optimal temperatures for attack are 68 - 86F (20-30C). Yet a rust outbreak occurred in late December, 2008, in the Southern California location above -- even though average temperatures were in the mid 50's. The fescue in question had very low nitrogen, and as important, had just received lots of rainfall. In California's dry climate, the rainfall and accompanying low light were enough to trigger infection, despite the low temps.

Turf Diseases

Visit PACE Turf on Facebook! Visit PACE Turf on YouTube! Follow PACE Turf on Twitter!