The genus Euonymus is a large group of plants composed of shrubs , vines and ground cover , according to Clemson University . These can change wide in appearance and even growth . Some are evergreen , while others are deciduous . The most popular with dwelling house gardeners are the evergreen shrubs , such as the attractive Euonymus japonicus . Unfortunately , these shrubs are often overuse in the landscape and can become highly susceptible to common diseases .
Cercospora Leaf Spot
This is a fungal disease of Euonymus plants , intend it is get by one or more types of fungi . This finicky disease , which is rather common consort to Clemson University , is due to either the Cercospora detructiva fungus , the C. euonymi fungus or both . The primary symptom of the disease is the appearing of diminished brown mark on the leaves . They can appear as pinprick or as splodge . Over fourth dimension , the spots maturate , move together and disperse , get over the leave . Sometimes , the midriff of the brown areas becomes oily and grizzly in color . In other cases , the spot drop out of the leaves , or the leaves shrivel up and unload off the plant .
Although this disease is untempting , it is not life - threatening . Any fell leaves should be removed immediately , as the fungi can overwinter in the grunge . you may use a fungicidal spray to handle the plant . ensure the ingredients contain thiophanate - methyl , and play along the pedagogy on the recording label for the size and age of your Euonymus plant .
Crown Gall
genus Euonymus industrial plant are highly susceptible to crown gall , which is a disease due to several dissimilar types of bacteria . The elementary symptom is the development of large , rotund galls , which swell up on the limb of the plant . moved orbit of the works can be rationalise off if the rancor are limited to one area . Otherwise , you’re able to brush off the disease , as it is not life - forbidding , concord to the University of Missouri . Still , it is untempting . Prevent treetop gall by defend against insect infestations of the Euonymus , as the bacteria that cause crown gall can get into the plant on the physical structure of insects . Spray the plant with an insect powder if you notice increase louse action on your shrub .
Anthracnose
Anthracnose is a disease that impact a wide range of woody ornamental plants , include those in the Euonymus family . This is a fungous disease , but alternatively of infecting only the leave of absence , the fungi , which are from the Colletrotichum coinage , aggress the wood as well . Symptoms include brownish spots on the leaves and dreary , recessed , cracked areas of wood . As a result , Euonymus shrubs often lose their leaves , even those that are evergreen .
snip off infected area and remove any dropped leaves from the grime . start a taxonomic fungicidal treatment to forestall Anthracnose from harming your Euonymus and other woody plants . Look for a fungicide marketed as " all purpose " or " garden treatment " and apply it at regular intervals , starting in former bound , according to the guidance on the package . Anthracnose can be fatal in severe cases , especially if the plant is stressed from environmental condition .
References
Related
