bacterial soft rot on African Violet
Quick answer
If your African Violet has bacterial soft rot, the most likely cause is: Erwinia chrysanthemi is a gram-negative bacterial phytopathogen that causes soft rot in African violets. The pathogen produces pectin methylesterase (PME) and pectate lyases that break down plant cell walls. The bacteria require iron-regulated outer membrane polypeptides (80,000-90,000 molecular weight) for full virulence. When these iron acquisition systems are disrupted, the bacteria lose pathogenicity. The infection enters through wounds or natural openings and spreads systemically, causing maceration of the crown tissue.
Start here:
- 1. Inspect roots and crown immediately at first sign of mushy tissue or foul odor
- 2. Remove all affected tissue with sterile scissors, cutting 1 inch into healthy tissue
Why African Violet gets bacterial soft rot
Erwinia chrysanthemi is a gram-negative bacterial phytopathogen that causes soft rot in African violets. The pathogen produces pectin methylesterase (PME) and pectate lyases that break down plant cell walls. The bacteria require iron-regulated outer membrane polypeptides (80,000-90,000 molecular weight) for full virulence. When these iron acquisition systems are disrupted, the bacteria lose pathogenicity. The infection enters through wounds or natural openings and spreads systemically, causing maceration of the crown tissue.
How to reverse bacterial soft rot on African Violet
- 1
Inspect roots and crown immediately at first sign of mushy tissue or foul odor
- 2
Remove all affected tissue with sterile scissors, cutting 1 inch into healthy tissue
- 3
Dust cut surfaces with cinnamon powder as a natural antibacterial barrier
- 4
Repot in fresh, sterile African violet mix (peat/perlite/vermiculite 1:1:1)
- 5
Water sparingly from bottom only, allowing soil to dry between waterings
- 6
Maintain 65-75°F temperature to slow bacterial growth
- 7
Isolate plant from others to prevent spread
Keep bacterial soft rot off this African Violet
Use sterile potting mix and clean pots. Avoid overhead watering that wets the crown. Maintain good air circulation. Water from bottom only, allowing top inch to dry between waterings. Inspect new plants before introducing to collection.