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Black spot on ligustrum?

  • JDR8820
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Black spot on ligustrum? was created by JDR8820

Posted 4 years 3 months ago #65129
Hi all,

Assuming this is not normal? This is a ligustrum sinesis, lots of fresh green growth in the canopy but some of the older leaves have brown patches or spots on them. Sat in a south facing window with
Lots of light in a cool room. Watering when needed (using a moisture meter) and misting too.

Is this cercospora? Should I be looking at getting some anti fungal?

Thanks!

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  • Buffy Fan
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Replied by Buffy Fan on topic Black spot on ligustrum?

Posted 4 years 3 months ago #65189
Oh, my ligustrum has had a couple of singular black/brown spots on old l3aves. However, it has not had patchy brown ones spread across the leaves like above. Treatment might be required.
Last Edit:4 years 3 months ago by Buffy Fan
Last edit: 4 years 3 months ago by Buffy Fan.
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Replied by JDR8820 on topic Black spot on ligustrum?

Posted 4 years 3 months ago #65227
I thought so, I’ve pruned away the leaves with the most obvious brown spots and I’m going to monitor it for a few days. I’ve got some Scott’s Fungus ultra clear spray but it says only use between April and Sept so I’m holding off on using it......if anyone has experience with the specific problem in the pictures I’d appreciate more advice. Thanks!
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Replied by leatherback on topic Black spot on ligustrum?

Posted 4 years 3 months ago #65228
Unless you keep this in a very wet position I doubt it is fungal. Could just be old age, indoor conditions etc.

I do not see any reason for concern. Then again, I typicaly try to grow without poision etc where possible.
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Replied by JDR8820 on topic Black spot on ligustrum?

Posted 4 years 3 months ago #65256
Yes I’d rather not use the anti fungal if possible, the window does get quite a bit of condensation at this time of year so It might be a bit damp there. I’m waiting to see if the spots start appearing on new growth before spraying.
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