This is a common fungal disease that can attack any herbaceous plant, though peas and beans are particularly susceptible. Some woody species, like roses, are also vulnerable. It is easily recognizable by the gray or white powdery splotches on leaves, buds, and stems (the powder is the fungal spores and filaments). Though the fungus is spread by water or humid air, it needs a dry surface to establish itself. Water plants in the morning to allow leaves to dry before night. Encourage air circulation around leaves by staking and keeping beds cleaned of weeds and debris. Sulfur is a last-dtich control. A dilute solution of baking soda in water should be tried first.

fungal disease that produces spots or white patches on leaves, shoots and other plant parts

Occurs mostly in chile and grapes. Foliar disease that causes leaf curling and premature leaf drop. This exposes the fruit to the sun, resulting in sun scald.

any of various fungi of the genus Erysiphe producing powdery conidia on the host surface

Also known as oidium. A disease of grapevines that ruins the taste of the grapes and can eventually kill the vine. Quatsch(German) Nonsense, rubbish. Richtsfest(German) Topping-out ceremony, performed when the roofbeam has been raised during the construction of a new house.

One of several fungi that can cause severe damage to grape crops; also called oidium.