Repeated Defoliation Can Lead to Tree Death, a 2021 Harvard Study
We know that trees, just as any living thing, have a limit to their stored energy reserves. With each action a tree takes – whether it be leaf and root […]
Mealybug Diagnostics
ATP: Asia Tree Preservation2020-08-31T15:12:13+08:00Mealybugs attach their piercing and sucking moutparts to the base and stem of new foliage. Preferring shade, they are often located under the leaves. These insects begin their activity at […]
Phauda flammans Caterpillar Treatment
ATP: Asia Tree Preservation2023-08-16T01:20:10+08:00This insect is a caterpillar of the red moth called Phauda flammans and is responsible for the complete defoliation (leaf loss) of Ficus trees in Hong Kong. Eggs are laid […]
Aphids Diagnostic Guide
ATP: Asia Tree Preservation2020-08-28T22:57:44+08:00Aphids are the most common insect found on trees and shrubs. There are many species of aphids that feed on numerous hosts. Aphids use their piercing sucking mouthparts to extract […]
Ambrosia and Bark Beetle Diagnostic Guide
Trees at Risk
Avocado and various fruit trees, Camphora, Samanea, Liquidambar, Ulmus, Magnolia, and others. Many ambrosia species will preferentially attack smaller trees or new plantings […]
2016 09 Tree Failure in Yuen Long
A tree failure occurred in a park in Yuen Long in September 2016. “white ant s” (termites) were noted at the point of tree failure. This is an example of […]
Banyan Tussock Moth (Perina nuda) Insect Treatment
The Banyan Tussock Moth (Perina nuda) is a leaf eating insect that generally targets Ficus trees (banyan trees) in Hong Kong. This insect is especially active in Hong Kong Island […]
Anoplophora glabripennis
Anoplophora glabripennis, Asia longhorn beetle
Host and distribution
The most destructive non-native insect attacking US trees in the Asian longhorn beetle Anoplophora glabripennis. As with the closely related Citrus longhorn beetle (A. chinensis), […]
Bursaphelenchus xylophilus
Bursaphelenchus xylophilus, pine wood nematode
Host and distribution
Pine wood nematode B. xylophilus is spread by Monochamus beetles and with the movement of infested live or sawn wood. B. xylophilus can live […]
Candidatus Liberibacter asiaticus
Bacterium, Candidatus Liberibacter asiaticus, citrus greening, also known as huanglongbing
Host and distribution
Ca. L. asiaticus is a bacterial pathogen originating in Asia that has recently been introduced into the Americas (1). It […]