What causes rust spots on leaves?

Answer by  ebu (14)

Rust spots can be caused by nutrient deficiencies in the plant. This is commonly caused by a pH imbalance in the soil, which can be changed by adding nutrients and compost. You can buy a home testing kit at any gardening store, and some stores will even test your soil for you.

Answer by  champaign9497 (11977)

Usually it is caused by over exposure to the sun. You may need to transplant it. The soil may be too alkaline.

Answer by  BrendaG (6111)

Causes include excessive humidity or moisture. Heavy rain can leave water on the leaves causing the spots. Fungi and bacteria can cause the spots to appear.

Answer by  errika69 (167)

There are many possibilities such as PH changes, ozone damage, calcium or potassium deficiency, different types of fungi, or viruses.

Answer by  mcsaripkin (73)

Rain contains trace amounts of minerals that are picked up during evaporation. When rain falls on the leaves, these minerals remain, rust, and thus leaving rust spots.

Answer by  BrendaG (6111)

Humid weather conditions and imbalance in the soil's makeup are two things that help rust spread. A fungal disease, it is spread by wind and water splashes.

Answer by  spoiledtraveler1 (106)

Rust spots on leaves are caused by a lack of water making it to the leaves thus drying out or killing it or the sun beating down on it.

Answer by  Katie57 (169)

The causes of rust can vary amongst different types of plants. The most common cause of rust is a type of fungus.