The cherry laurel is a problematic yet widely spread plant. Several countries are worried about its proliferation because it poses a threat to local biodiversity. But what are the reasons behind this concern?
This is a plant you have likely seen before: the cherry laurel. It is a dense shrub with green leaves, often found in gardens where it creates an opaque barrier, as it retains its leaves throughout the winter.
However, this very plant poses a threat to local biodiversity, prompting several countries to take notice of its mass presence. For instance, Switzerland will prohibit its sale and import starting September 1st.
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But what about us? In Belgium, there is currently no ban, although several municipalities wish to rid themselves of it. This is particularly true for Genappe and Lasne, where local authorities believe this plant disrupts the landscape and offers no benefits to biodiversity.
Simon Dewitte, a nurseryman, explains: “When cherry laurel is not pruned regularly, it will flower. And where there are flowers, there are also fruits. Birds will eat these fruits and disperse the seeds everywhere. Consequently, having a cherry laurel leads to an increase in seedlings around it. (…) If you have a hedge bordering a nature reserve, the cherry laurel will spread rapidly.“
It is worth noting that it appears on the European list of invasive exotic plants of concern.
Cherry Laurel Gardens
Cherry Laurel: A Beautiful Yet Invasive Plant
Cherry laurel (Prunus laurocerasus) is a commonly seen shrub in gardens known for its glossy green leaves and year-round foliage. While it provides an aesthetic appeal and serves as an effective privacy screen, it poses significant threats to local ecosystems. This article delves into why cherry laurel is considered problematic, its ecological impact, and what steps some municipalities are taking to mitigate its spread.
What is Cherry Laurel?
Cherry laurel is a hardy evergreen shrub native to the regions of Eastern Europe and the Mediterranean. Its dense growth habit often makes it a popular choice for hedges and garden borders. However, its rapid growth and ability to thrive in a variety of conditions contribute to its classification as an invasive species in several regions.
The Threat Posed by Cherry Laurel to Local Biodiversity
Despite its aesthetic value, cherry laurel poses numerous threats to local biodiversity:
- Spread Through Fruiting: As noted by nurseryman Simon Dewitte, when cherry laurel is not pruned adequately, it flowers and produces fruits, which are consumed by birds. This leads to the rapid spread of seedlings in surrounding areas, particularly if located near nature reserves.
- Dominance Over Native Species: Cherry laurel can outcompete native plants for nutrients, sunlight, and space, leading to a decline in biodiversity.
- Change in Soil Composition: The presence of cherry laurel can alter the soil chemistry, making it less hospitable for local flora.
Case Studies: International Response to Cherry Laurel Proliferation
Switzerland’s Bold Move
In an effort to protect its natural ecosystems, Switzerland has decided to ban the import and sale of cherry laurel starting September 1st. This landmark decision emphasizes the seriousness of the invasive nature of this shrub and its potential consequences on local flora.
Responses from Belgium
In Belgium, municipalities such as Genappe and Lasne have recognized the threat of cherry laurel and have moved towards restricting its use. Residents in these areas express concerns regarding how the plant obstructs natural landscapes, furthering calls for action.
Identifying Cherry Laurel in Your Garden
Identifying cherry laurel can help in managing its impact:
- Leaf Characteristics: The leaves of cherry laurel are dark green, glossy, and can grow up to 6 inches long.
- Flowers and Fruits: In spring, it produces white flowers in elongated clusters followed by small, dark fruits.
- Growth Habit: It can reach heights of up to 10-15 feet if untrimmed.
Benefits of Cherry Laurel
Despite its negative impacts, there are some benefits to cherry laurel, particularly in managed settings:
- Privacy Screening: Its dense foliage provides an effective barrier against wind and prying eyes.
- Low Maintenance: Once established, cherry laurel requires minimal care and is drought-tolerant.
Practical Tips for Managing Cherry Laurel
Regular Pruning
To prevent cherry laurel from flowering and spreading its seeds, regular pruning is essential. Aim to shape the plant annually during late winter or early spring.
Replacement Alternatives
If you’re considering removing cherry laurel from your garden, consider these native alternatives:
- Boxwood (Buxus): Offers a similar aesthetic without the invasiveness.
- Holly (Ilex): Provides year-round foliage and berries for local birds.
- Native shrubs like Viburnum or Coralberry: Encourage local wildlife while maintaining garden beauty.
Expert Testimonials
Gardeners and local environmentalists have shared their experiences regarding cherry laurel:
“After I removed the cherry laurels in my backyard, I noticed a significant increase in bird species visiting the area. It feels good to see local flora thriving again!” – Jasmine, Local Gardener
Conclusion: Making Informed Decisions in Landscaping
As the conversation around invasive plant species continues, it becomes increasingly important for homeowners and landscapers to make informed decisions. While cherry laurel can be visually appealing, its long-term impact on local ecosystems cannot be ignored. By opting for native plants and managing existing cherry laurels, we can promote biodiversity and sustainable landscaping practices.
