Archive · 25 Dec 2025
Neem Trees Threatened by Dieback Disease in India
Neem trees, which are usually strong and healthy, are in big trouble in India.
A fungus called Dieback disease is making them sick.
Over 60% of neem trees in Telangana are infected.
The fungus spreads quickly, especially because of heavy rains.
Birds carry the fungus from one tree to another.
Big, old trees can usually get better on their own, but young trees might not survive.
Scientists say we should not use chemical sprays to fight the fungus.
Instead, they suggest cutting off the sick parts of the tree and using henna, a natural plant, to help the tree heal.
The fungus only hurts neem trees and not people or other plants.
This problem might last for about 10 years until the trees learn to fight the fungus better.
Over 60% of neem trees in Telangana are infected with Dieback disease (Phomopsis azadirachtae).
The fungus spreads rapidly due to heavy monsoon rains and birds carrying spores.
Mature neem trees typically recover within months, but young trees aged 1-2 years are highly vulnerable.
Scientists recommend pruning infected branches and using henna as a natural remedy instead of chemical sprays.
The disease is host-specific to neem trees and poses no health risk to humans or other plants.
- Who
- Scientists and researchers, including B Sadasivaiah
- What
- Dieback disease (Phomopsis azadirachtae) infecting neem trees
- When
- Current outbreak, with previous outbreaks in 2004 and 2007-08
- Where
- Telangana, Karnataka, and Maharashtra, with previous outbreaks in Uttarakhand and Bengaluru
- Why
- Heavy and prolonged monsoon rains create ideal conditions for fungal growth
- Disease
- Phomopsis azadirachtae (Dieback disease)
- Affected Trees
- Over 60% of neem trees in Telangana
- Cause
- Heavy and prolonged monsoon rains
- Vulnerable Trees
- Young neem trees aged 1-2 years
- Recovery Rate
- 99% of mature trees recover within months
- Natural Remedy
- Henna paste or extract solution
- Outbreak Duration
- Expected to last nearly a decade
- Previous Outbreaks
- Uttarakhand (2004), Bengaluru (2007-08)