root rot on Philodendron
Quick answer
If your Philodendron has root rot, the most likely cause is: Pythium, Phytophthora, and Rhizoctonia fungi proliferate in waterlogged soil with poor drainage. These pathogens attack root cortex cells, causing browning, mushy texture, and inability to uptake water/nutrients.
Start here:
- 1. Unpot plant and gently rinse roots under lukewarm water
- 2. Trim all brown, mushy, or foul-smelling roots with sterilized shears
Why Philodendron gets root rot
Philodendron spp.
Pythium, Phytophthora, and Rhizoctonia fungi proliferate in waterlogged soil with poor drainage. These pathogens attack root cortex cells, causing browning, mushy texture, and inability to uptake water/nutrients.
Other documented causes on philodendron:
- • Root rot in Philodendron develops when soil saturation exceeds 7 days, creating anaerobic conditions (dissolved oxygen <2mg/L) that promote Pythium and Fusarium proliferation. The epiphytic root system, adapted to tree bark with high oxygen exposure, suffocates in dense potting mix. Unlike drought-tolerant succulents, Philodendrons lack water-storing tissue and depend on continuous root respiration. Early signs include yellowing lower leaves and stunted new growth with deformed leaves—symptoms often mistaken for nutrient deficiency or sunburn.
How to reverse root rot on Philodendron
- 1
Unpot plant and gently rinse roots under lukewarm water
- 2
Trim all brown, mushy, or foul-smelling roots with sterilized shears
- 3
Soak remaining roots in 3% hydrogen peroxide solution for 5 minutes
- 4
Repot in fresh dry aroid mix; choose pot 1-2 inches larger than root ball
- 5
Wait 7 days before first watering to allow root callusing
Keep root rot off this Philodendron
Use terracotta pots with drainage holes. Mix 30% perlite + 20% orchid bark + 50% potting soil. Water only when top 2 inches are bone dry.
Other Philodendron problems
Same Problem on Other Plants
Go Deeper
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