The fungus has also been known to infect pygmy date palm (Phoenix roebelenii) and has been a big problem in Florida during the winter months.

Spots and discoloration areas can be smaller than 0.25 inches (6.4 mm) in size, but under optimal conditions can grow much larger eventually forming lesions.

Wounds and damage to the plant offer easy access for the fungus so the limitation of human and insect activity can be very beneficial.

Limiting the length of time that the leaves are wet when exposed to high humidity levels also reduces the risk of inoculation.

Nutrient deficiencies can cause chlorosis and necrosis of leaf tissue which then in turn creates a wound necessary for disease inoculation.