Rhizosphaera Needle Cast
Rhizosphaera Needle Cast Rhizosphaera needle cast, caused by the fungus Rhizosphaera kalkhoffii, is a fungal disease that affects spruce trees, causing needles to turn brown or purplish-brown and fall off. The disease often starts on the lower branches and progresses upward, and from the inside of the tree outwards. Spraying with fungicides can be an effective way to help trees, especially in preventing and managing fungal diseases. Fungicides work best as protectants, meaning they are most effective when applied before a tree is exposed to a pathogen. While they can’t […]