Also known as Botrytis rot (Botrytis cinerea). The fungus that causes gray mold invades the plant and flower bracts that have been damaged by slugs ,frost, insects, or other factors. Infected plants turn brown on the outside. On the inner surface is the characteristic gray growth.
The fungus survives on decaying organic matter. Botrytis rot is most common during rainy weather. Plant in well-drained areas. Remove infected plant parts and protect plant buds from damage caused by invertebrates. When storing chokes, remove infected chokes immediately.
Fungicides registered for grey mold control must be applied before infection takes place, they won't cure an existing infestation. If you've had problems with gray mold in the past apply fungicide before the infestation gets to the plant.
Avoid injuring the foliage. Damaged foliage from Fertilizer-burn or frost- is much more susceptible to grey mold infection.
Avoid densely spaced seedlings growing levels by selecting a container that allows adequate spacing for seedling development.
Containers can also be placed at a wider spacing to allow better air circulation during periods when seedlings are especially vulnerable.
Fungicides effective against Gray Mold generally have Prothioconazole  as an active ingredient.
Artichoke Plume Moth