Ecologists warn against planting of Conocarpus plant species along highways and medians
Ecologists are raising alarms about the continued planting of the invasive Conocarpus tree along highways in Tamil Nadu, despite existing bans in other states. This species, once favored for its rapid growth, poses significant ecological and public health risks, including increased allergies and damage to urban infrastructure. Experts are urging the replacement of Conocarpus with native species to ensure sustainable urban greening.
- ▪The Conocarpus tree is invasive and has been linked to health issues like allergies and asthma.
- ▪Its aggressive root system damages urban infrastructure, including water pipelines and sewage networks.
- ▪Despite warnings, highway projects in Tamil Nadu continue to plant this species, prompting calls for regulation.
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| Original publisher | The Hindu — Top |
| Canonical URL | https://www.thehindu.com/news/cities/Madurai/ecologists-warn-against-planting-of-conocarpus-plant-species-along-highways-and-medians/article71018020.ece |
| Publication time | Sun, 24 May 2026 20:19:26 +0530 |
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Despite explicit warnings from environmentalists and blanket bans in States like Gujarat and Telangana, recent highway development projects across Tamil Nadu are inexplicably continuing to plant the invasive Conocarpus tree.For years, the sleek foliage of the Conocarpus tree (Conocarpus erectus), native to the tropical America and Mexico, was hailed as the ultimate saviour for India’s urban afforestation. Chosen by highway planners and civic authorities for its lightning-fast growth and ability to stay lush during brutal summers, this exotic species was planted by the millions. However, this cosmetic greening has come at a severe ecological and public health cost.
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