Is cinnamon effective against root rot?
Written by
Olivia Mitchell
Reviewed by
Prof. Martin Thorne, Ph.D.Cinnamon has antifungal properties. These qualities make it a desirable organic defense against pathogens that cause root rot. I have used ground cinnamon to protect pruned roots on orchids or seedlings and have seen recovery rates as high as 80% when applied to newly cut roots showing early signs of infection. The compound cinnamaldehyde in cinnamon degrades fungal cell membranes while leaving beneficial microbes in the soil unharmed.
Root Treatment Method
- Dust 1 tbsp cinnamon per 6" pot diameter on cleaned roots
- Reapply every 4 weeks during humid conditions
- Combine with chamomile tea soak for enhanced efficacy
Soil Amendment Protocol
- Mix 2 tsp cinnamon powder into top 1" of potting mix
- Water lightly to activate compounds without washing away
- Avoid use in cactus/succulent soils needing rapid drainage
Preventive Strategies
- Sprinkle cinnamon on fresh cuttings before propagation
- Create barrier against fungus gnats in topsoil layer
- Pair with 30% perlite to prevent waterlogging
Monitor the effectiveness of cinnamon on plants by observing for new root growth and stabilized foliage. Ten days later, I saw the white tips of new roots on my monstera plant. In contrast, the untreated plants continued their growth decline. Excessive use of cinnamon may cause soil to dry out, so limit its application to three times per growing season unless reinfection occurs.
Read the full article: Root Rot Symptoms: Signs, Causes, and Solutions
