Rustweed or juniper leaf is a native plant that earns its name from orange coloring in the fall. It is a drought-tolerant summer annual or short-lived perennial plant. It is found throughout the southeastern United States on mostly open, disturbed sites. Rustweed is considered a ruderal species, meaning that it colonizes open ground and does not handle competition well. Research has shown that rustweed seeds can remain viable in the soil for over one hundred years, just waiting for optimal conditions.