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Black spots in several plants

Javi.xeneizeJavi.xeneize Posts: 193
in Plants
Hi

i have noticed some plants have black spots in their leaves. I don’t know if it might be a disease or is it caused by the temperature, overwatering etc... can anybody help please?

thanks

Posts

  • BijdezeeBijdezee Posts: 1,484
    Hi, could you post a few pics? Hard to say without seeing it. Also, some examples of which plants are affected. 
  • Javi.xeneizeJavi.xeneize Posts: 193
    Se attached. It’s camellia and apple tree
  • BijdezeeBijdezee Posts: 1,484
    edited June 2020
    They look like different problems. For the Camelia I would suggest a look through this:
     https://www.rhs.org.uk/advice/garden-health/problems/Camellia-problems-frequently-asked-questions#:~:text=Affected leaves may be shed,of the leaf blight fungi.&text=After a heat wave, camellia,result of high temperature damage.

    There was a long period of dry weather in May which often does this to apple tree leaves. It could also be a mineral shortage. A good feed of liquid seaweed would help I think. I don't think it's a major issue though. 
  • Javi.xeneizeJavi.xeneize Posts: 193
    So it’s not a disease in your opinion? Thanks
  • BijdezeeBijdezee Posts: 1,484
    edited June 2020
    Not on the apple tree but I'm not an expert ofc, I see mine getting like that if there's drought so I do what I said above. Mine had a calcium deficiency and treating that made a big difference.

    Is the apple a dwarf variety in a pot? Or is it in the ground? 
  • Javi.xeneizeJavi.xeneize Posts: 193
    I have tomorite but I think it’s for tomatoes or peppers. Would it work in an apple tree?
  • BorderlineBorderline Posts: 4,700
    How are you growing the Camellia? In a container or in the ground? If the spots are raised, they may be scab, which tends to be down to growing conditions. Normally inconsistent watering but more associated with poorly drained soils. You may need to look into this and also make sure the shrub is growing with good air flow.
  • Javi.xeneizeJavi.xeneize Posts: 193
    It’s in the soil. Probably is overwatering 

    spots are flat, it’s part of the leaf, I tried to remove it with my nail and I broke the leaf
  • BorderlineBorderline Posts: 4,700
    If you have no premature leaf drop it's unlikely to be any fungal infection. Camellias tend to suffer more with lack of flowering. If your shrub flowered like normal, it's most likely issues with drainage or possible poor ventilation. If your soil is heavy and compacted, you may need to improve it with rotted manure or something similar. To be on the safe side, it is always best to collect any fallen leaves and dispose them for the time being.
  • Javi.xeneizeJavi.xeneize Posts: 193
    Great. Thanks for the advice! 
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