Monday, April 13, 2009

Why are leaves on my charles joly lilac turning brown?

Bacterial blight of lilac is caused by the bacterium Pseudomonas syringae pv. syringae.





The disease is also commonly referred to as Shoot Blight and Blossom Blight.





Infections result in the appearance of brown spots on the leaves and stems on the plants.





Cultural Management





Take the proper actions required to keep the plant as healthy as possible. Practice proper fertilization and water management. Stresses caused by the lack of nutrients and/or water can predispose the plants to an infection.





Avoid wetting the foliage and overhead irrigation to minimize splashing of the bacterium on to the host plants. Prune plants to allow for increased air circulation through the canopy. Also proper spacing of plants is recommended.



beauty

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