The emergence of the box tree moth was initially discovered in Toronto August 2018 and has become a growing concern for boxwood owners in Ontario. This invasive pest feeds on boxwood foliage, causing severe defoliation and weakening of the plants. In this article, we delve into the impact of the boxwood moth, explore the reasons behind boxwoods appearing to die, and discuss alternatives, with recommendations for removal and new planting.
The Rise of the Box Tree Moth in Ontario
The box tree moth, has been on made its presence known in Ontario landscapes, posing a significant threat to boxwood plants. The larvae of this moth voraciously feed on boxwood foliage, leading to extensive damage and even the death of affected plants if left unchecked.
Why Do My Boxwoods Look Like They Are Dying?
If your boxwoods exhibit signs of decline, it's possible that they are suffering from infestation by the box tree moth. Indications of infestation include skeletonized leaves, the presence of webbing on foliage, and noticeable defoliation. Additionally, the presence of larvae and moth activity may signal a boxwood moth infestation. While Landscape Ontario suggests using a biological product containing Bacillus thuringiensis (commercially known as Dipel or Safer’s BTK) to combat larvae, such as early to mid-May and early July, it's important to note that now that it is June and July is almost upon us, the damage to your boxwoods may already be severe enough to warrant removal.
Indicators of Boxwood Moth Infestation
As gardeners contend with the challenge of box tree moth infestation, recognizing the signs of infestation becomes crucial in implementing effective management strategies. Based on my research here are some indicators that your boxwoods may be affected by the moth:
Presence of Life Stages
Observing the life stages of the boxwood moth can be a clear indication of infestation. Look for green caterpillars with a black head, known as larvae, or adult moths with white wings and light brown margins. While adult moths are nocturnal and less frequently found within boxwood foliage, larvae are more commonly observed, along with pupae in some cases.
Skeletonization
One of the telltale signs of boxwood moth infestation is skeletonized foliage. The voracious appetite of the moth caterpillars leads to the consumption of boxwood leaves, leaving behind skeletal remains.
Defoliation
Severe infestations often result in extensive defoliation, weakening the plants and rendering them susceptible to further stressors. The loss of foliage can significantly impact the health and aesthetic appeal of boxwood plants.
Silken Webbing
Boxwood moth larvae spin fine silk webs around a couple of boxwood leaves, creating a small protected 'house' for the larvae to overwinter. While these webs can be challenging to detect, they are typically found deeper within the foliage and resemble spider nests.
By familiarizing yourself with these signs of boxwood moth infestation, you can take proactive steps to address the issue and protect your landscape from further damage. If you suspect infestation, consider consulting with SHR Management for expert removal and replanting services tailored to your specific needs.
Reporting Box Tree Moth Outside of Ontario
In addition, if you suspect you've spotted a box tree moth or signs of infestation on a boxwood shrub outside of Ontario, you can promptly report it by visiting InspectionCanada.ca.
Addressing Box Tree Moth Infestation: Removal and Alternatives
In cases of severe boxwood shurb moth infestation, removal of affected plants may be necessary to prevent further spread and mitigate damage to surrounding vegetation. Alternatives such as Japanese and Hick Yew shrubs offer resilient options for replacing infested boxwoods. These evergreen shrubs not only provide similar aesthetic appeal but also exhibit greater resistance to pests and diseases.
Exploring Yew Shrubs: Resilient Alternatives for Ontario Landscapes
Japanese Yew
Benefits: Dark green foliage, versatile landscaping uses
Foliage, Flowers: spiny, dark-green evergreen needles, which are about 1 inch long, and has small flowers and red ornamental fruit
Height: Up to 20-40 feet
Size: Broad and likes to spread
Hick's Yew
Benefits: Dense, upright growth habit, adaptable to pruning, excellent for hedges and screens, with slow growth this one is virtually hassle-free
Height: Up to 10-15 feet
Size: Medium to large-sized shrub
Hardiness Factor: Hardy and resilient, withstands urban conditions and pollution
Canadian Yew
Benefits: Similar to the Japanese Yew but with leaves that are not as wide.
Height: Up to 4 feet
Size: spreads up to 7 feet
Hardiness Factor: Adaptable to various soil types
SHR Management: Your Partner in Removal and New Planting
For those grappling with boxwood moth infestation, SHR Management offers expert removal services tailored to your specific needs. With a focus on preserving the health and beauty of your landscape, SHR Management can assist in the removal of infested boxwoods and the selection and planting of suitable alternatives such as Japanese and Hick Yew shrubs.
The presence of the boxwood shrub moth in Ontario landscapes underscores the importance of proactive pest management and exploring alternative planting options. By addressing infestation through removal and replanting with resilient alternatives, such as Japanese and Hick Yew shrubs, gardeners can safeguard their landscapes against the devastating effects of the boxwood moth. For expert assistance in removal and new planting, trust SHR Management to guide you through the process and restore the vitality of your garden.
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