Diff: Japanese Beetles and Rose Chafers

== Japanese Beetles and Rose Chafers ==

== Japanese Beetles and Rose Chafers ==

Japanese beetles and rose chafers are regional chewing pests. They can damage flowers, buds, and foliage quickly, but control choices depend heavily on location and product registration.

Japanese beetles and rose chafers are regional chewing pests. They can damage flowers, buds, and foliage quickly, but control choices depend heavily on location and product registration.

=== Signs ===

=== Signs ===

* Ragged holes in petals and buds.

* Ragged holes in petals and buds.

* Skeletonised leaves with veins left behind.

* Skeletonised leaves with veins left behind.

* Adult beetles visible on flowers or foliage during feeding periods.

* Adult beetles visible on flowers or foliage during feeding periods.

* Damage can be intense for a short seasonal window.

* Damage can be intense for a short seasonal window.

=== Cultural and mechanical controls ===

=== Cultural and mechanical controls ===

* Handpick adults into soapy water in the morning when they are slower.

* Handpick adults into soapy water in the morning when they are slower.

* Use fine netting or fabric over prized blooms where practical.

* Use fine netting or fabric over prized blooms where practical.

* Remove badly damaged flowers that attract more beetles.

* Remove badly damaged flowers that attract more beetles.

* Keep roses healthy enough to regrow after the seasonal feeding period.

* Keep roses healthy enough to regrow after the seasonal feeding period.

=== Trap caution ===

=== Trap caution ===

Japanese beetle traps can attract beetles as well as capture them. If used, place traps well away from roses and follow extension guidance.

Japanese beetle traps can attract beetles as well as capture them. If used, place traps well away from roses and follow extension guidance.

=== Direct treatment notes ===

=== Direct treatment notes ===

* Insecticides for beetles vary by jurisdiction and can harm pollinators and beneficial insects.

* Insecticides for beetles vary by jurisdiction and can harm pollinators and beneficial insects.

* Do not spray open flowers when bees are active. Follow label timing and pollinator warnings.

* Do not spray open flowers when bees are active. Follow label timing and pollinator warnings.

* Grub control in lawns does not automatically solve adult beetle feeding on roses, because adults can fly in from elsewhere.

* Grub control in lawns does not automatically solve adult beetle feeding on roses, because adults can fly in from elsewhere.

* Rose chafers can be dangerous to chickens and some other animals if eaten, so handpicked beetles should be disposed of safely.

* Rose chafers can be dangerous to chickens and some other animals if eaten, so handpicked beetles should be disposed of safely.

=== Sources ===

=== Sources ===

* [Clemson Extension: Rose Insects and Related Pests](https://hgic.clemson.edu/factsheet/rose-insects-related-pests/)

* [Clemson Extension: Rose Insects and Related Pests](https://hgic.clemson.edu/factsheet/rose-insects-related-pests/)

* [University of Minnesota Extension: Rose Chafers](https://extension.umn.edu/yard-and-garden-insects/rose-chafers)

* [University of Minnesota Extension: Rose Chafers](https://extension.umn.edu/yard-and-garden-insects/rose-chafers)

* [UC IPM: Rose pests and disorders](https://ipm.ucanr.edu/home-and-landscape/rose/)

* [UC IPM: Rose pests and disorders](https://ipm.ucanr.edu/home-and-landscape/rose/)

* [UK HSE: Garden home pesticide guidance](https://www.hse.gov.uk/pesticides/using-pesticides/garden-home.htm)

* [UK HSE: Garden home pesticide guidance](https://www.hse.gov.uk/pesticides/using-pesticides/garden-home.htm)

[[Category:Pests]]

[[Category:Pests]]

[[Category:Regional Notes]]

[[Category:Regional Notes]]