The Dark Side of Fabric Weed Barriers.
Tanbark is a popular landscaping material used to cover bare soil, reduce erosion, and provide a neat appearance to garden beds. However, many people make the mistake of using a fabric weed barrier under the tanbark, thinking that it will help to prevent weeds from growing. In this guide, we will discuss why using a fabric weed barrier under tanbark is not a good idea.
1. Fabric Weed Barriers Can Cause Soil Compaction
When a fabric weed barrier is placed on top of soil, it can create a barrier that prevents water, air, and nutrients from reaching the roots of the plants. Over time, this can cause the soil to become compacted, making it difficult for roots to grow and thrive. Soil compaction can lead to poor drainage, root rot, and nutrient deficiencies.
2. Fabric Weed Barriers Can Trap Moisture
Another problem with using a fabric weed barrier under tanbark is that it can trap moisture. While the fabric may allow some water to pass through, it can also trap moisture underneath, creating a damp environment that can promote the growth of fungi and bacteria. This can lead to root rot and other plant diseases.
3. Fabric Weed Barriers Can Limit Soil Aeration
Healthy soil needs to be well-aerated, allowing air to circulate around the roots of plants. When a fabric weed barrier is used under tanbark, it can limit soil aeration, preventing air from reaching the roots. This can lead to oxygen deprivation, which can cause root damage and inhibit plant growth.
4. Fabric Weed Barriers Can Inhibit Natural Soil Processes
The soil is home to a complex ecosystem of microorganisms, including bacteria, fungi, and other organisms that help to break down organic matter, release nutrients, and support plant growth. When a fabric weed barrier is used under tanbark, it can inhibit these natural soil processes, disrupting the balance of the soil ecosystem.
5. Fabric Weed Barriers Can Lead to Weed Growth
Ironically, using a fabric weed barrier under tanbark can actually lead to more weeds, rather than fewer. Over time, organic matter such as leaves, twigs, and other debris can accumulate on top of the fabric, providing a fertile environment for weed seeds to germinate. Weeds can also grow through small holes or tears in the fabric.
6. Fabric Weed Barriers Can Be Difficult to Remove
Finally, using a fabric weed barrier under tanbark can make maintenance and removal more difficult. Over time, the fabric can become embedded in the soil, making it difficult to remove. This can make it difficult to plant new plants or make changes to the garden bed.
Alternatives to Fabric Weed Barriers
If you want to prevent weeds from growing under tanbark, there are other alternatives to using a fabric weed barrier. One option is to use a layer of newspaper or cardboard instead. Lay several layers of newspaper or cardboard on top of the soil, and then cover with a layer of tanbark. The newspaper or cardboard will eventually break down, adding organic matter to the soil and suppressing weed growth.
Another option is to use a pre-emergent herbicide, which is a chemical that prevents weed seeds from germinating. This can be a good option for large areas, but it is important to follow the manufacturer’s instructions carefully and avoid using it around desirable plants.
Finally, regular maintenance, including hand-weeding and mulching, can also help to prevent weed growth. Keep the garden bed free of debris and weeds, and apply a layer of mulch on top of the soil to suppress weed growth and conserve moisture.
In conclusion, using a fabric weed barrier under tanbark is not a good idea. It can cause soil compaction, trap moisture, limit soil aeration, and inhibit ecosystem development.
Contact D&S Exteriors today to discuss which weed suppression methods would be most beneficial for your landscaping project!