root rot on Anthurium
Quick answer
If your Anthurium has root rot, the most likely cause is: Anthurium losing its primary root system, requiring rehab but sensitive to pure water propagation.
Start here:
- 1. Cut away rot with a sterilized blade. Anthuriums have thick roots; look for the stringy center vascular tissue to pull away dead velamen.
- 2. Treat with a diluted hydrogen peroxide drench (1:4 ratio) for 10 minutes.
Why Anthurium gets root rot
Anthurium spp.
Anthurium losing its primary root system, requiring rehab but sensitive to pure water propagation.
Other documented causes on anthurium:
- • Root rot in Anthurium is a hydrostatic crisis caused by anaerobic conditions in compacted media (like tight Sphagnum or heavy potting soil). Shipped plants are especially prone when repotted too quickly into moisture-retentive substrates. Rotten roots appear translucent and "deflated," unlike firm healthy roots that may be dark due to soil tannins.
- • Root rot in Anthurium occurs when epiphytic aerial roots remain in waterlogged, poorly aerated soil for 7+ days. Standard potting soil retains too much moisture and compacts over time, creating anaerobic conditions that promote Pythium and Phytophthora fungal pathogens. Anthurium roots evolved for attachment to tree bark in tropical canopies, requiring constant oxygen exchange and rapid drainage—conditions incompatible with dense peat-based mixes.
How to reverse root rot on Anthurium
- 1
Cut away rot with a sterilized blade. Anthuriums have thick roots; look for the stringy center vascular tissue to pull away dead velamen.
- 2
Treat with a diluted hydrogen peroxide drench (1:4 ratio) for 10 minutes.
- 3
Pack the base of the stem and remaining healthy roots in a mix of 80% sphagnum moss and 20% coarse perlite.
- 4
Keep the moss damp and warm. Anthuriums establish strong, fuzzy aerial roots aggressively in a moss-perlite mix.
Keep root rot off this Anthurium
Use extreme chunky mixes (orchid bark, charcoal, pumice) for Anthuriums; standard potting soil suffocates their epiphytic roots quickly.