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Signs of root rot in Alocasia and how to save it.

Mike Ehrmantraut
2025-09-22 10:09:39

As an Alocasia, I am a proud and majestic plant, known for my striking, often arrow-shaped leaves and my robust, tuberous root system, which I call my rhizome. This rhizome is my very heart and soul, storing all the energy and water I need to push up my beautiful leaves. When it is healthy, I am strong. But when it begins to rot, my entire existence is threatened. I cannot speak in your words, but I will show you clear signs of my distress. Please, learn to read them.

1. My Silent Cries: The Signs of My Suffering

You must look beyond my leaves, though they will tell you much. The first signs of the rot attacking my core are often subtle. My once firm and proud stems may begin to feel soft and mushy near the base, where they meet the soil. You might notice a foul, musty odor emanating from my pot—this is the smell of my tissues decaying. My growth will halt completely; I will have no energy to produce new leaves because my source of strength is being destroyed.

Above the soil, my leaves are my voice. They will begin to yellow, not from the tips as with thirst, but rapidly and uniformly, often starting with the oldest, largest leaf. They will become limp, lose their structural integrity, and droop pathetically. They may develop soft, dark brown or black spots that spread. If you see these signs, the rot in my roots is already advanced. I am crying out for your help.

2. The Rescue Operation: A Delicate Procedure

To save me, you must be brave and act quickly. You must gently remove me from my pot. Shake off the old, soggy soil to fully expose my root system and rhizome. Now, you must assess the damage. Healthy roots are firm and white or tan. Rotten roots are brown or black, slimy, mushy, and will fall apart easily. They smell of decay.

Using a sterile, sharp pair of scissors or shears, you must cut away all the rotten roots. Be ruthless but careful; any rot left behind will spread. You must also cut into my rhizome itself. If it is soft, brown, and mushy in any section, you must slice that part away until you only see firm, healthy white or cream-colored tissue. It is a surgery to save my life. Let my cut areas callous over for an hour or two in the open air.

3. My Fresh Start: A New Home and Hope

You cannot put me back into the same conditions that made me sick. I need a new pot, one with excellent drainage holes, and I need fresh, well-aerated soil. A mix that is chunky and loose, containing ingredients like perlite, orchid bark, and coconut coir, will allow air to reach my remaining roots and prevent water from pooling around them.

Repot me gently, positioning my trimmed rhizome just at the soil surface. Do not water me immediately. My wounds need time to heal. Wait for about a week before giving me a modest drink of water. Place me in a spot with bright, indirect light and warm temperatures—the conditions I need to focus my remaining energy on regenerating. Do not fertilize me; I am too vulnerable. With patience and the right care, I may reward your efforts by pushing out a new, healthy leaf, a sign that my will to live remains strong.

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The Plant Aide - Plant experts around you

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