it is caused by a fungus,spread by water and insects. use a product that is used for blackspot.
This is the second year that stink bugs have come into my home. In this time there has been no evidence that they eat the house plants. They do leave pea size black spots on the leaves. These can be removed from smooth leaves with a wet paper towel. I don't know if the spots can be removed from fuzzy leaves.
Normal wear and tear from arc welds when bulb is becoming deteriorated. replace if you don't to wait till they burn out on their own.
red maple leaves
because of a storm
These are called sun spots.
black spots on the leaves?
The black spots on dogs' tongues are just birth marks.
Magnolias unlike many trees lose their leaves in the springtime. This year my magnolia started to drop leaves in the first week of May when the weather got warmer. black spots on the underside of the leaves can also be seen. Magnolias like lime free soil, so a lime free compost is best.
It is possible that the black spots are caused by the fern leaves resting on the pot. It is also possible that a certain species of butterfly has laid her eggs on the underside of the plant leaves.
Cold water kills the leaves of African Violets. Where the water touches, it causes dead spots on the leaves. Room temperature water will not cause these dead spots.
Due to Sun rays
The orange spots are caused from lack of water. This is one house plant you almost can NOT over water.
their head is usually white with black spots they eat bamboo and their leaves and they sleep.
A blackspot is a dangerous place or area, or any of several diseases which leave black spots on leaves or the skin.
the cheetahs color are brownish with black spots
to blend in with the leaves
This is the second year that stink bugs have come into my home. In this time there has been no evidence that they eat the house plants. They do leave pea size black spots on the leaves. These can be removed from smooth leaves with a wet paper towel. I don't know if the spots can be removed from fuzzy leaves.