YOU MAY THINK THIS IS JUST A BLACK SPOT, BUT IT’S REALLY ARTILLERY FUNGI WHICH CAN CAUSE A DISEASE!
WHAT IS ARTILLERY FUNGUS?
Artiller fungi is in the genus Sphaerobolus. These fungi colonize dung or other organic matter such as wood mulch, wood benches and wood sheds. Arillery fungi disperse their spores using a dark spore packet, called paridioles, which sit on top of specialized cup-shaped cells which accumulate water and cell contents. When enough liquid is accumulated, the cupped cells invert causing the cells to burst and propel the peridioles as high as 6 meters where they can adhere to new surfaces.
WHERE TO LOOK FOR ARTILLERY FUNGUS?
Color: Yellow-brown to black
Shape: Disk-shaped spots
Size: 1-2 mm
Artillery Fungi can be found on nearly any surface because of a sticky substance covering the peridiole. They are sensitive to light and the spores are projected towards it. Because of this, they are frequently located on white and light-colored substances or other bright, light-reflecting bases like house siding or white cars.
WHEN TO LOOK FOR ARTILLERY FUNGUS?
Most typically spring and summer (very seldom in the winter)
HOW DO I GET RID OF ARTILLERY FUNGUS?
Artillery Fungus is extremely sticky and therefore a good efficient way to them off has not been found without leaving stains or damage. If you own brand new vinyl (only) siding that still has a shiny oily sheen, power washing MAY work. Each spore mass can be physically scraped or sanded off. Then the stain MIGHT be removed with an ink eraser, but this is very difficult. Be aware of “to good to be true” cleaners because most of the time they are “to good to be true.”
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