Common Boxwood Plant Pests:
Prevention and Control Methods

Boxwood plants are a popular choice for landscaping and home gardens. They are evergreen shrubs that can add a touch of elegance to any yard. However, like any plant, they are susceptible to pests that can damage or even kill the plant. In this article, we will discuss the most common boxwood pests and the prevention and control methods you can use to keep your plants healthy and thriving.

Common Boxwood Pests

Boxwood Leafminer

The boxwood leafminer is a small fly that lays its eggs inside the leaves of the boxwood plant. The larvae then feed on the inside of the leaves, causing them to turn yellow or brown and eventually fall off the plant. If left untreated, boxwood leafminer infestations can lead to severe damage to the plant.

Boxwood Psyllid

Boxwood psyllids are tiny insects that feed on the sap of boxwood plants. They cause damage by creating small pits on the leaves of the plant. Boxwood psyllids can also cause discoloration of the leaves and stunted growth if left untreated.

Boxwood Mites

Boxwood mites are microscopic pests that feed on the sap of boxwood plants. They cause damage by creating tiny white or yellow specks on the leaves of the plant. Over time, these specks can merge together, causing significant damage to the plant.

Prevention Methods

The best way to prevent boxwood pests is to keep your plants healthy and stress-free. Here are some tips for maintaining healthy boxwoods:

• Plant boxwoods in well-draining soil with good air circulation.
• Water boxwoods deeply once a week rather than frequent shallow watering.
• Mulch around the base of each plant to retain moisture and prevent weed growth.
• Prune boxwoods regularly to remove dead or diseased branches.
• Fertilize boxwoods in spring with a slow-release fertilizer.

Control Methods

If your boxwoods have already been infested with pests, it’s important to act quickly to prevent further damage. Here are some control methods you can use:

Insecticidal Soap

Insecticidal soap is an effective treatment for many boxwood pests, including leafminers and psyllids. The soap works by suffocating the insects, so they can no longer breathe. To use insecticidal soap, mix it with water according to package directions and spray it onto the affected plants.

Horticultural Oil

Horticultural oil is another effective treatment for boxwood pests, including mites. The oil works by smothering the insects and their eggs. To use horticultural oil, mix it with water according to package directions and spray it onto the affected plants.

Neem Oil

Neem oil is a natural pesticide that works by disrupting the life cycle of many insects, including boxwood pests. To use neem oil, mix it with water according to package directions and spray it onto the affected plants.

FAQ

What are some signs that my boxwoods have been infested with pests?

Some common signs of pest infestations in boxwoods include yellow or brown leaves, small pits on leaves, stunted growth, and tiny white or yellow specks on leaves.

Can I prevent pest infestations in my boxwoods?

Yes! The best way to prevent pest infestations in your boxwoods is by maintaining healthy plants through proper watering, pruning, mulching, and fertilization.

How do I know which treatment method to use for my specific pest problem?

Identifying which pest is causing damage to your boxwoods is crucial in determining which treatment method to use. You can consult with a local nursery or extension office for help identifying pests and choosing treatment options.