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Why are there brown spots on the leaves of my Euphorbia?

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Brown spots on Euphorbia leaves can be caused by a few different factors. One possible cause is fungal infection. Overwatering or high humidity levels can create conditions that promote fungal growth, which can cause brown spots on the leaves. Another possible cause is insect infestation. Mealybugs, spider mites, and other pests can cause brown spots on Euphorbia leaves as they feed on the plant. Finally, direct exposure to hot or cold temperatures can cause brown spots on the leaves of Euphorbias.

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