Crown rot or root rot of strawberries is a common example of diseases of fruit crops caused by "P. cactorum". On strawberries, "P. cactorum" infects the roots and the base of the plant causing stunting and reduced leaf size, with possible complete plant collapse later in the season. Similarly to apple trees, crown rots of strawberries caused by "P. cactorum" can be partially diagnosed by cutting the crown of the plant and observing brown vascular tissues, and root rots by brown or black stunted roots.