Botrytis Bud and Twig Blight

Botrytis bud and twig blight causes bud death and twig dieback on susceptible hosts. You'll notice brown, fuzzy fungal growth on affected buds and shoots during cool, moist weather. The disease favors spring conditions with cool temperatures and high humidity. Remove infected buds and twigs promptly, improve air circulation, and avoid overhead watering that keeps plants wet.

Collect and destroy infected plant debris and tissues from and around the plant. Maintain a steady, relatively dry environment by keeping greenhouse humidity below 90%, increasing spacing between plants for good air circulation, and taking care not to splash water on foliage during watering.