Plant Health and Pest Management in Lagerstroemia Species

Lagerstroemia species, commonly known as crape myrtles, are prized for their vibrant blooms and resilience in urban and rural landscapes across temperate and subtropical regions. Despite their popularity, these trees face significant health challenges from sap-sucking insects, notably the crapemyrtle bark scale (Acanthococcus lagerstroemiae), as well as fungal pathogens that can cause leaf spot and dieback under humid conditions. Environmental stressors such as drought or nutrient imbalance often exacerbate disease incidence and pest outbreaks. Effective plant health management rests on an integrated approach: selecting and propagating resistant cultivars, implementing cultural controls like proper irrigation, pruning and sanitation, and judicious use of insecticides and fungicides to minimise non-target impacts. Advances in biological control—particularly the deployment of coccinellid predators and specialist parasitoids—offer sustainable options for suppressing bark scale populations. Enhanced understanding of pest life cycles, host suitability and ecological interactions now underpins targeted integrated pest management programmes that safeguard both the aesthetic and ecological functions of Lagerstroemia in diverse settings.

Research from Nature Portfolio

No recent Nature Portfolio content available.

Plant Health and Pest Management in Lagerstroemia Species publication trend

The graph below shows the total number of articles in plant health and pest management in lagerstroemia species across all publications each year (not limited to Nature Index journals).

Technical terms

Acanthococcus lagerstroemiae: A sap-sucking hemipteran insect known as crapemyrtle bark scale that infests Lagerstroemia bark and branches.

Integrated pest management: A coordinated approach to pest control that combines cultural, biological and chemical methods to minimise environmental impact.

Host range: The spectrum of plant species that a pest can infest and utilise for feeding and reproduction.

Polyphagous: Describing a pest that feeds on multiple, often unrelated, host plant species.

Biological control: The use of natural enemies, such as predators and parasitoids, to regulate pest populations.

References

1. Crapemyrtle Bark Scale: A New Threat for Crapemyrtles, a Popular Landscape Plant in the U.S.. Insects (2016).
2. Host Suitability for Crapemyrtle Bark Scale (Acanthococcus lagerstroemiae) Differed Significantly among Crapemyrtle Species. Insects (2020).
3. Feeding Preference of Crapemyrtle Bark Scale (Acanthococcus lagerstroemiae) on Different Species. Insects (2020).