root rot on Rubber Plant
Quick answer
If your Rubber Plant has root rot, the most likely cause is: Root rot in Ficus elastica develops when the fibrous root system remains in waterlogged, poorly aerated soil for extended periods. Anaerobic conditions (oxygen <2mg/L) promote bacterial and oomycete pathogens (Pythium, Phytophthora) that colonize root tissue, causing cellular breakdown. Unlike succulents with water-storing tissues, rubber plant roots are thin and fibrous, making them particularly vulnerable to oxygen deprivation. Early detection is difficult as thick leaves mask root decline until structural failure occurs.
Start here:
- 1. Unpot plant and rinse all soil from roots to assess damage extent
- 2. Trim ALL black, mushy, or foul-smelling roots with sterilized scissors—healthy tissue is white/firm
Why Rubber Plant gets root rot
Ficus elastica
Root rot in Ficus elastica develops when the fibrous root system remains in waterlogged, poorly aerated soil for extended periods. Anaerobic conditions (oxygen <2mg/L) promote bacterial and oomycete pathogens (Pythium, Phytophthora) that colonize root tissue, causing cellular breakdown. Unlike succulents with water-storing tissues, rubber plant roots are thin and fibrous, making them particularly vulnerable to oxygen deprivation. Early detection is difficult as thick leaves mask root decline until structural failure occurs.
How to reverse root rot on Rubber Plant
- 1
Unpot plant and rinse all soil from roots to assess damage extent
- 2
Trim ALL black, mushy, or foul-smelling roots with sterilized scissors—healthy tissue is white/firm
- 3
Treat remaining roots with 3% hydrogen peroxide solution (1:1 with water) for 20 minutes
- 4
Allow plant to callus on dry paper towel for 48 hours before repotting
- 5
Repot in completely dry, well-draining mix; withhold water for 7-10 days
Keep root rot off this Rubber Plant
Water only when top 2-3 inches of soil are bone-dry. Use terracotta pots for natural moisture wicking. Ensure pot has multiple drainage holes. Never allow plant to sit in standing water.