{"id":2645,"date":"2025-11-14T05:37:20","date_gmt":"2025-11-14T05:37:20","guid":{"rendered":"https:\/\/palmfoundation.co.za\/?page_id=2645"},"modified":"2025-11-14T09:12:46","modified_gmt":"2025-11-14T09:12:46","slug":"lethal-bronzing-disease","status":"publish","type":"page","link":"https:\/\/palmfoundation.co.za\/?page_id=2645","title":{"rendered":"Lethal Bronzing Disease"},"content":{"rendered":"\t\t
\n\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

A Comprehensive Guide to Lethal Bronzing Disease (LBD) in Palm Trees<\/strong><\/h3>

Author: Johan Grabe CEO and Founder of Koingnaas Palms<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

\n\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

Lethal Bronzing Disease (LBD), a devastating and fatal condition affecting numerous palm species, poses a significant threat to landscapes across Florida and beyond.<\/p>

First identified in Florida in 2006, this disease has spread rapidly, causing extensive losses of iconic palms.<\/p>

Formerly known as Texas Phoenix Palm Decline (TPPD), LBD is caused by a phytoplasma, a specialized type of bacteria, and is spread by an insect vector.<\/p>

Once a palm is infected and shows symptoms, there is no cure, and the tree’s decline is swift and certain.<\/p>

This report provides a detailed overview of Lethal Bronzing Disease, covering its cause, transmission, methods for detection, and the critical management strategies required to control its spread and protect valuable palms.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

\n\t\t\t\t\t
\n\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t
\n\t\t\t
\n\t\t\t<\/path><\/g><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

Cause and Spread of Lethal Bronzing Disease<\/strong><\/h3>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

Lethal Bronzing Disease is caused by a phytoplasma, a type of bacteria that lacks a cell wall, making it difficult to study in a laboratory setting.<\/p>

This phytoplasma, named Candidatus Phytoplasma palmae, resides in the phloem of the palm, the vascular tissue responsible for transporting nutrients throughout the plant. The disease is closely related to the phytoplasma that causes Lethal Yellowing, another devastating palm disease.<\/p>

The primary vector for LBD is the palm cixiid, Haplaxius crudus, a small, piercing-sucking insect.<\/p>

This planthopper feeds on the sap of infected palms, acquiring the phytoplasma, and then transmits it to healthy palms as it continues to feed.<\/p>

The insect itself is difficult to detect due to its small size and its tendency to inhabit the high canopies of palms.<\/p>

The spread of LBD is not mechanical, meaning it cannot be transmitted through pruning tools or other equipment.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

\n\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t
\n\t\t\t
<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
\n\t\t\t\t\t
\n\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t
\n\t\t\t
\n\t\t\t<\/path><\/g><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

Susceptible Palm Species and Symptoms<\/strong><\/h3>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

LBD affects a growing list of palm species, with at least 19 confirmed hosts. Some of the most notable and commonly affected palms include:<\/p>