Bot Canker or Botryosphaeria dothidea is a fungus that often affects various types of woody shrubs and trees and can cause extensive dieback. This pathogen invades through wounds in the bark, causing the formation of cankers. The cankers then expand and girdle twigs, branches, and even the trunk, leading to the eventual decline of the plant. Botryosphaeria dothidea is just one of many species of canker-causing fungi.
The wide range of native and ornamental plants in California often fall victim to leaf spots. Fungi, bacteria, or even environmental stressors cause spots on leaves. While they may look unsightly, most leaf spot diseases are relatively harmless to the overall health of the plant. However, some leaf spot diseases can cause significant damage if left untreated.
The invasion of Botryosphaeria Canker only happens in a stressful environment. On a high key, if the trees and woody shrubs in your landscape are already stressed or vulnerable, Botryosphaeria Canker attacks them.
Sudden Oak Death refers to a disease that occurs due to Phytophthora Ramorum (a plant pathogen like a fungus). This disease was first identified in the middle of the 1990s, killing some Oak species (such as coast live oak and Oak relatives).
Anthracnose is a common fungal disease that affects a variety of plant and tree species in warm, humid areas. It affects aerial tissues, developing shoots, and expanding leaves of shrubs, trees, and other plants. This disease contaminates the usual fruit-bearing plants, deciduous and evergreen trees, grasses, and annuals. However, shade trees like sycamore, oak, maple, etc., are more susceptible to Anthracnose. So, let’s find out how this fungal disease attacks different tree and plant species.