Disease Profiles: Powdery Mildew

Introduction Powdery mildew is a fungal disease that affects a wide range of plants. It is caused by numerous fungi in the order Erysiphales, of…

Tree Diseases: Holly Leaf Spot

Introduction Holly leaf spot, also referred to as holly tar spot, is a fungal disease that affects holly plants. Holly tar spot induces the formation…

Insect Profiles: Red Pine Scale

Introduction Red pine scale is a small exotic insect that infests several species of pine. The insect’s preferred host is red pine. Red pine scale…

Disease Profiles: Maple Tar Spot

Introduction Maple tar spot is a fungal disease that affects many species of maple. The disease occurs most frequently in North America and Europe. It…