Fungal disease of minature integra hakuro nishiki - Knowledgebase Question

Castleford, En
Question by callumhawkin
August 2, 2006
What is the cause and treatment of fungal disease of my salix integra hakuro - nishiki the thin trunk has got brown wax like circles half way up, and white fungus with a black dot in the middle on the thin branches. The white and pink leaves are also dying as a result of this disease. Thank you.


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Answer from NGA
August 2, 2006

0

Based on your description I think the tree may be infested by scale insects, possibly accompanied by sooty mold. These can be controlled with applications of horticultural oil or insecticidal soap when they are in the soft crawler stage, some types can also be controlled by applying a horticultural oil spray during the dormant season. I would suggest you work with a local professionally trained nurseryman for a more specific identification of the pest(s) and based on knowing that, determine how to proceed. I'm sorry you are having trouble with your little willow.

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