Deserts have less water and rainfall that speed up oxidation.
Because there is no water
Since there is little humidity and rain in a desert, metal items oxidize (rust) at a much slower rate than in more humid areas.
The greatest agent of erosion is water which is rare in the desert except during the brief rainy season. Therefore, water erosion in the desert is much slower than in areas with more rainfall.
All continents have deserts. Even Europe has some small areas of desert and semi-desert areas.
Rusting is strongly favored in humid atmosphere and also by the ion chloride from salt.
There are five major desert areas in North America:Mojave Desert Great Basin Desert Chihuahuan Desert Sonoran Desert Colorado Plateau Desert
There are about 24 major desert areas in the world and dozens of much smaller desert regions.
Major desert areas are found in:CaliforniaNevadaArizonaNew MexicoTexasColoradoUtahMajor desert areas are found in:CaliforniaNevadaArizonaNew MexicoTexasColoradoUtah
Yes, rusting of iron can occur in distilled water, although the process may be slower compared to if the iron is exposed to water containing ions or impurities that can catalyze the rusting process. Rusting is a chemical reaction in which iron reacts with oxygen in the presence of moisture to form iron oxide.
Cattails would only be found in areas in the desert with permanent water. They are not common in the desert because such areas of water are rare.
Objects in the desert do rust, just at a much slower rate. Water and high humidity speed up the oxidation process. Deserts have little moisture so the process is slower.
The best way is to have a company such as Ziebart spray a protective coating in thes areas.