Kabatina Tip Bligh of Juniper

Disease Information

Kabatina Tip Bligh

COMMENTS on disease

Tip blights cause the tips of cedar branches to die. Often, small black dots, fruiting structures of the fungi that cause tip blights, are visible on the affected needles. Junipers are particularly susceptible to Phomopsis and Kabatina tip blight, two damaging fungal diseases that cause needle browning and dieback at the tip of the branches. Tip blight of junipers is caused by two different species of fungi, Phomopsis juniperovora and Kabatina juniperi, which cause similar symptoms in the affected plants. However, the two diseases differ by the time of the year when they occur and their development on the plant.

Symptoms

Phomopsis tip blight can be particularly devastating in nursery settings when it affects seedlings of young grafted stocks. Otherwise, the damage it causes on junipers in natural or landscape settings is not very significant.

Management

Both blights are more prevalent in moist and warm conditions. Whenever possible, resistant varieties should be planted to prevent these diseases, and healthy practices implemented. These include adequate spacing between plants to allow for sufficient air flow, avoiding prolonged night time watering or using overhead sprinklers, and pruning and discarding any diseased material. Plants are particularly susceptible to tip blight infection when stressed or wounded by insects or mechanical injury.

Both blights, in general, do not require any chemical control in natural established plantings.

 



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