- This topic has 3 replies, 1 voice, and was last updated December 20, 2022 at 7:28 am by Armuro.
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AdAdele20 December 20220 Wish green leaves
Why are the leaves on my Dieffenbachia yellowing?
Hello,
I have the dieffenbachia from the picture for 2 years. It is positioned quite close to the window only now the amount of light has decreased considerably. During the summer I used Zimmerpflanzen Organic Indoor Plant Fertilizer and in October when I bought AMN BonaVita I also applied it 2-3 times about every 10 days. I think the last application was at the beginning of November. I can’t say precisely when I first noticed a leaf with such an affected edge because at first it seemed normal. It was however at the transition from summer to autumn and maybe out of habit I put too much water on. Seeing that the problem persisted I removed the affected leaves and changed the pot and substrate. I tried to put less water. But with all these measures, the spots continue to appear on other leaves. I don’t really know what to do. If I remove all the affected leaves more or less, I am left with very few. Maybe I should also apply a treatment. I have several fungicides bought on past orders like champ, amistar or dynamic but I don’t really know which would work best in this situation. Last winter I did not encounter this problem. Thank you.Attachments:
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Hello. These symptoms may be caused by abiotic factors: inadequate watering, quality of water used, decreased light intensity, temperature fluctuations, dry air, or biotic factors: possibly a bacterial disease.
In this case, it is recommended to remove heavily affected leaves, and for safety, you may consider one treatment with a copper-based fungicide such as Champ 77 WG, 20 g, 20 g/10 L water, applied by uniform spraying on the leaves.
Further, it is recommended to maintain constant environmental conditions in the space, follow the care requirements specific to these species (Dieffenbachia, plant care and growing guide), and monitor the plant’s development for a period. In case other symptoms appear, we are waiting for your message along with the pictures.-
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AdAdele20 December 2022
Can I still apply AMN BonaVita, 500 ml now to help the roots?
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You can apply 2-3 treatments with AMN BonaVita, 500 ml, by watering, according to the label recommendations.
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