Alternaria is a ubiquitous mold found almost everywhere in the country and is a normal agent of decay and decomposition as well as plant associated disease.
Palo Verde is one of the most common trees of the Sonoran Desert and is found throughout southern Arizona and southeastern California. Starting in April, the Palo Verde produces a brite yellow flower that stands in contrast to it’s characteristic green trunk and branches. In late spring it is common to see the Palo Verde covered […]
Johnson Grass is found in washes, along road sides and other areas where there is enough water. Although it is an allergenic grass, pollen counts in the Phoenix area tend to be low because of it’s sparse distribution. It pollenates May through October.