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Can anyone tell me what this browning is on the leaves of my… | Pests, diseases and problems | Planta-community

Jayjh93

Can anyone tell me what this browning is on the leaves of my supermarket mini roses?

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  1. Sunny

    It could be edema if the dark areas look translucent. Edema is excess water sent to the leaves that can’t be released through transpiration. So, the cells burst like a blister leaving a translucent appearance. Increasing air circulation to dry the soil faster and adding more light to help the photosynthesis process, which uses more water, will both help reduce the chances of edema occurring.

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