Root Rot in Houseplants — Prevention, Diagnosis & Treatment

Complete guide to root rot in houseplants. How to identify, treat, and prevent it. 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: Symptoms: Yellow leaves, mushy stems, foul smell from soil, dark mushy roots. Cause: Overwatering + poor drainage = oxygen-deprived roots → fungal infection. Treatment: Remove from pot, cut dead roots, repot in dry fresh soil. Prevention: Well-draining soil, pots with drainage holes, proper watering. Understanding these fundamentals will help you diagnose and resolve this issue more effectively.

The most common reasons this occurs include: The #1 killer of houseplants — caused by overwatering. Roots need oxygen — waterlogged soil suffocates them. Fungal pathogens attack oxygen-deprived roots. Poor drainage and oversized pots contribute to root rot. Identifying the root cause is the first step toward finding the right solution.

To resolve this, follow these recommended steps: Unpot the plant and inspect roots (healthy = white/firm, rotted = brown/mushy/smelly). Cut away ALL mushy/brown roots with sterile scissors. Let roots air-dry for a few hours. Repot in fresh DRY well-draining soil — do not water for 3-5 days. Going forward: water less often and ensure proper drainage. If these steps do not resolve the issue, consider consulting additional resources or a qualified professional.

This article is part of our Plant Care Guides collection on Houseplants Wiki. We provide comprehensive, up-to-date information to help you find solutions quickly.