When it comes to gardening and landscaping, one of the most common materials used for mulching and decorative purposes is bark chippings. Bark chippings are not only aesthetically pleasing, adding a warm, natural look to gardens and paths, but they also serve several practical functions such as retaining moisture, suppressing weeds, and regulating soil temperature. However, a question that often arises among gardeners and landscapers is whether it’s necessary to put anything under bark chippings to enhance their effectiveness and longevity. In this article, we will delve into the world of bark chippings, exploring their benefits, the potential need for underlay materials, and how to make the most out of this versatile gardening material.
Understanding Bark Chippings
Bark chippings are made from the bark of trees, typically from coniferous species, which is chipped into small pieces. They are a by-product of the timber industry and are considered an environmentally friendly choice for gardening because they are natural, biodegradable, and can help reduce waste. The benefits of using bark chippings in gardens and landscapes are numerous. They help in reducing soil erosion by covering the soil surface, thus preventing it from being washed or blown away. Additionally, bark chippings act as a weed suppressant, blocking light from reaching weed seeds and preventing them from germinating. They also play a role in temperature regulation, keeping the soil cooler in summer and warmer in winter, which can lead to healthier plant growth.
The Role of Underlay Materials
While bark chippings are effective on their own, the question remains whether placing something underneath them can enhance their performance. The primary purpose of an underlay material is to prevent the bark from sinking into the soil and to stop weeds from growing up through the bark. There are several materials that can be used under bark chippings, including landscaping fabric, plastic sheets, and even old newspapers.
Landscaping Fabric
Landscaping fabric, also known as weed barrier fabric, is a popular choice for underlay material. It allows water and air to reach the soil while keeping weeds at bay. This fabric is porous, which means it won’t trap water or cause the soil to become waterlogged, a common issue with non-porous underlay materials like plastic sheets. When using landscaping fabric under bark chippings, it’s essential to ensure that the fabric is laid flat and evenly, with no wrinkles or folds that could allow weeds to grow through. The edges of the fabric should be secured with pins or weights to prevent them from being disturbed by wind or foot traffic.
Other Underlay Options
Besides landscaping fabric, other materials can be used as an underlay for bark chippings. Plastic sheets are sometimes used because they are inexpensive and effective at suppressing weeds. However, they can prevent water and air from reaching the soil, potentially harming plant roots. Old newspapers can also serve as a makeshift underlay. They are biodegradable, allow for water and air passage, and can act as a natural fertilizer as they decompose. However, their effectiveness in suppressing weeds is less compared to landscaping fabric or plastic sheets.
Benefits of Using an Underlay with Bark Chippings
Using an appropriate underlay material under bark chippings can offer several benefits. Firstly, it can extend the lifespan of the bark chippings by preventing them from sinking into the soil too quickly. This means that the bark chippings will need to be replenished less often, saving time and money in the long run. Secondly, an underlay can improve weed suppression, reducing the need for manual weeding or the use of herbicides. This not only saves time but also contributes to a more sustainable and environmentally friendly gardening practice.
Considerations for Choosing an Underlay
When deciding on an underlay material to use under bark chippings, several factors need to be considered. The type of soil is a crucial factor; for instance, if the soil is prone to waterlogging, a porous underlay like landscaping fabric would be more suitable. The climate and weather conditions of the area should also be taken into account. In areas with heavy rainfall, an underlay that allows for good drainage would be essential. Additionally, the budget for the project should be considered, as different underlay materials vary significantly in price.
Environmental Considerations
In recent years, there has been a growing emphasis on environmentally friendly practices in gardening and landscaping. When choosing an underlay material, it’s important to consider the environmental impact. For example, while plastic sheets might be effective at suppressing weeds, they are not biodegradable and can contribute to plastic waste. On the other hand, landscaping fabric and biodegradable alternatives like old newspapers are more environmentally friendly options.
Conclusion
Bark chippings are a versatile and beneficial material for gardening and landscaping, offering advantages in terms of aesthetics, weed suppression, and soil health. While they can be used on their own, placing an appropriate underlay material underneath them can enhance their effectiveness and longevity. By understanding the benefits and considerations of using an underlay with bark chippings, gardeners and landscapers can make informed decisions that not only improve the appearance and health of their gardens but also contribute to sustainable gardening practices. Whether you choose landscaping fabric, plastic sheets, or a biodegradable alternative, the key is to select an underlay that complements the bark chippings and supports the overall well-being of your garden.
For those looking to implement bark chippings in their gardening projects, here is a brief summary of key points to consider:
- Choose an underlay material that is suitable for your soil type and climate.
- Consider the environmental impact of your underlay choice.
By following these guidelines and considering the specific needs of your garden, you can effectively utilize bark chippings and underlay materials to create a beautiful, sustainable, and thriving outdoor space.
What is the purpose of putting something under bark chippings?
The primary purpose of placing a material under bark chippings is to create a stable and durable groundcover. Bark chippings can be prone to shifting or blowing away in the wind, especially if they are not installed on a flat surface. By placing a suitable material underneath, such as a weed barrier fabric or a layer of gravel, you can help prevent the bark chippings from displacing and reduce the need for frequent replenishment. Additionally, the underlying material can help to suppress weed growth, which can compete with desired plants for water and nutrients.
The choice of material to place under bark chippings depends on the specific application and desired outcome. For example, if you are installing bark chippings in a garden bed, you may want to use a weed barrier fabric to prevent weeds from growing up through the chippings. On the other hand, if you are using bark chippings as a decorative groundcover on a slope or in a high-traffic area, you may prefer to use a more robust material, such as a layer of gravel or a geotextile fabric, to provide additional stability and support. By selecting the right material, you can create a beautifully landscaped area that requires minimal maintenance and upkeep.
Can I use bark chippings without putting anything underneath?
While it is technically possible to use bark chippings without placing any material underneath, it is not generally recommended. Without a suitable underlying material, the bark chippings may not perform as well as expected, and you may encounter problems such as displacement, weed growth, and premature decomposition. Furthermore, if the bark chippings are installed directly on soil, they can become soggy and waterlogged, which can lead to the growth of mold and fungus. This can create unpleasant odors and potentially harm plants growing nearby.
However, there are some situations where it may be acceptable to use bark chippings without an underlying material. For example, if you are using a thick layer of bark chippings (at least 3-4 inches deep) on a flat surface with good drainage, you may not need to place anything underneath. Additionally, if you are using bark chippings as a temporary or seasonal groundcover, you may not need to worry about placing a material underneath. Nevertheless, it is essential to weigh the pros and cons and consider the specific application before deciding whether to use an underlying material.
What are the best materials to put under bark chippings?
The best materials to put under bark chippings depend on the specific application, desired outcome, and local climate. Some popular options include weed barrier fabrics, landscape fabrics, gravel, and geotextile fabrics. Weed barrier fabrics are designed to prevent weeds from growing up through the bark chippings, while landscape fabrics can help to suppress weed growth and retain moisture in the soil. Gravel and geotextile fabrics, on the other hand, provide additional stability and support, making them ideal for use on slopes or in high-traffic areas.
When selecting a material to place under bark chippings, it is crucial to consider factors such as durability, permeability, and compatibility with the surrounding environment. For example, if you are installing bark chippings in a garden bed with poor drainage, you may want to use a permeable material, such as a landscape fabric or a layer of gravel, to allow excess water to drain freely. By choosing the right material, you can create a harmonious and functional landscape that meets your needs and complements the surrounding environment.
How do I install a weed barrier fabric under bark chippings?
Installing a weed barrier fabric under bark chippings is a relatively straightforward process that requires some basic tools and materials. First, clear the area of any debris, vegetation, or obstructions, and lay down the weed barrier fabric, ensuring it is large enough to cover the entire area. Secure the fabric to the ground using landscape pins or rocks, making sure to overlap any seams by at least 6 inches. Then, cut slits in the fabric to allow plants to grow through, if desired, and finally, spread the bark chippings evenly over the fabric, raking them out to the desired depth.
It is essential to follow the manufacturer’s instructions when installing a weed barrier fabric, as different products may have specific requirements or recommendations. Additionally, ensure the fabric is not too tight or too loose, as this can affect its performance and longevity. By installing the weed barrier fabric correctly, you can enjoy the benefits of bark chippings while minimizing maintenance and upkeep. Regularly inspect the fabric and make any necessary adjustments to ensure it continues to function as intended.
Can I use plastic sheeting under bark chippings?
While plastic sheeting may seem like a convenient and affordable option to place under bark chippings, it is not generally recommended. Plastic sheeting can prevent air and water from reaching the soil, which can lead to the buildup of condensation and the creation of an anaerobic environment. This can cause the bark chippings to decompose more quickly, leading to unpleasant odors and potentially harming plants growing nearby. Furthermore, plastic sheeting can also trap heat and moisture, which can lead to the growth of mold and fungus.
Instead of plastic sheeting, it is better to use a breathable, porous material, such as a landscape fabric or a weed barrier fabric, which allows air and water to reach the soil while still preventing weeds from growing up through the bark chippings. If you do decide to use plastic sheeting, ensure it is perforated or has holes to allow for airflow and drainage, and consider using a thinner, more flexible material that can conform to the contours of the ground. However, it is still recommended to explore alternative options, as plastic sheeting may not provide the best results in the long run.
How often should I replenish bark chippings if I don’t put anything underneath?
If you don’t put anything underneath the bark chippings, you may need to replenish them more frequently, depending on factors such as weather conditions, foot traffic, and weed growth. On average, bark chippings can last for around 2-5 years without any underlying material, but this can vary significantly depending on the specific application and environmental conditions. If the bark chippings are exposed to heavy rainfall, strong winds, or intense sunlight, they may break down more quickly, requiring more frequent replenishment.
To minimize the need for replenishment, it is recommended to install a suitable underlying material, such as a weed barrier fabric or a layer of gravel, to provide additional stability and support. Additionally, consider using a thicker layer of bark chippings (at least 3-4 inches deep) to reduce the need for frequent replenishment. Regularly inspect the bark chippings and replenish them as needed to maintain a consistent depth and appearance. By following these tips, you can enjoy the benefits of bark chippings while minimizing maintenance and upkeep.