Monstera Brown Spots — Causes, Diagnosis & Treatment

Why your Monstera has brown spots and how to fix them. Overwatering, sunburn, fungal infection, and pest damage diagnosed with photo-matching descriptions. This guide covers everything you need to know about this topic, including common causes, step-by-step solutions, and answers to frequently asked questions.

Here are the key things to understand: Overwatering spots: Soft, dark brown, often near leaf center with yellow halo. Sunburn spots: Dry, crispy, tan/light brown, appear on sun-facing side. Fungal spots: Small, dark, circular with a yellow ring — may spread to other leaves. Pest damage: Tiny brown dots or stippling — check undersides for mites or thrips. Physical damage: Irregular brown patches from transport or handling. Understanding these fundamentals will help you diagnose and resolve this issue more effectively.

The most common reasons this occurs include: Brown spots on Monstera can have many causes — diagnosis requires close inspection. Overwatering and root rot are the most common causes of soft brown spots. Direct sun causes crispy burn marks — Monstera are understory plants. Bacterial and fungal infections cause spreading spots with distinct borders. Identifying the root cause is the first step toward finding the right solution.

To resolve this, follow these recommended steps: Identify the spot type: soft/dark = water issue, crispy/tan = sunburn, small/circular = disease. For overwatering: Let soil dry out, check roots for rot, improve drainage. For sunburn: Move away from direct sun — bright indirect light is ideal. For fungal/bacterial: Remove affected leaves, improve air circulation, apply fungicide if spreading. For pests: Inspect leaf undersides, treat with neem oil or insecticidal soap. If these steps do not resolve the issue, consider consulting additional resources or a qualified professional.

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