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Botrytis Blight

Botrytis Blight is a common plant and tree disease that is also known as gray mold, blossom blight, bud blight or flower blight. It is caused by one of several fungi from the Botrytis species of fungus. Botrytis Blight can infect many different types of plants including ornamental trees, fruit trees, flowers, shrubs and vegetables, and the fungus, under certain conditions, can be spread between many different types of plants.

The fungus normally begins to grow and multiply on plant debris such as fallen leaves and blossoms and over-ripe fruit. Initially the growth and infection is limited to dead or decaying plant matter, but as the fungus replicates it begins to attack and invade healthy plant tissue. Once a tree or plant is infected the most visible signs of the infection are decaying fruit, spotting and decaying flowers (still on the plant) and in advanced cases cankers developing on the tree or plant. Botrytis Blight is most prevalent and invasive in cool, moist conditions.

Recommended Steps to Control Botrytis Blight

The first step to controlling an outbreak of Botrytis Blight is to remove and destroy any dead leaves, flowers or rotting fruit, especially if it is in contact with damp or wet soil. Avoid using a foliar sprinkler to water trees and plants. Always water plants at the ground level and trees at the drip-line with a soaker hose. At the first sign of an outbreak of Botrytis Blight spray with Captan Fungicide and repeat every 14 days, as necessary.