Stem Rot on rubber plant
What's Happening
Soft, mushy tissue at the base where leaves emerge from the stem indicates crown rot—progression of root rot into the above-ground stem tissue. The crown (growing point) is particularly vulnerable because water can pool at the stem base, creating ideal anaerobic conditions for bacterial and fungal pathogens. Unlike root rot alone, crown rot threatens the entire plant's survival as it compromises the central meristem responsible for new growth.
How to Fix It
- 1
Act immediately—crown rot progresses rapidly
- 2
Unpot and inspect extent of decay; healthy crown tissue is firm and white
- 3
Trim ALL soft/mushy tissue until only firm white stem remains
- 4
Sterilize cuts with cinnamon powder or diluted hydrogen peroxide
- 5
Allow cut surfaces to callus 3-5 days before repotting in dry, sterile mix
- 6
Water minimally for 4-6 weeks to prevent reinfection while healing
How to Prevent It
Avoid watering directly onto stem base where water can pool. Ensure crown sits slightly above soil line. Use shallow pots to prevent moisture retention around stem base. Provide excellent drainage.