This obligate aerobic organism grows well on most common media. Faucet aerators are not used in hospitals since pseudomonas grows there and contaminates the water. P. aeruginosa is the usual species responsible for most disease in man. A thin serrated edge to the colony demonstrates its motility.
Pseudomonads require water, oxygen and nearly any carbon source for growth.
Blue or green pus may be produced but most green pus is not due to pseudomonas. The silvery oily sheen seen on the surface of stagnant water is due to pseudomonas.