Should I Use Landscape Fabric For Gravel？

Why you should use landscape fabric for gravel?

Gravel is widely used in landscaping for driveways, garden paths, and decorative areas. However, many landscapers wonder whether they should install landscape fabric under gravel to prevent weeds growth and improve gravel stability. The core principle of laying landscape fabric for gravel is layered isolation, physical root barrier and stable structure.

1. Establish physical barriers to prevent weeds growth naturally

Landscape fabric forms a physical barrier between the soil and gravel. This prevents underground weeds from growing upwards through the gravel. Because the landscape fabric is mostly black and added into UV-resistant ingredients, it can effectively inhibit the photosynthesis of weeds, thus preventing them from taking root and sprouting. Although some weed mats are designed in green or white to meet homeowners’ aesthetic preferences, the addition of UV-resistance still allows them to effectively suppress weed growth.

2. Separate the soil from the gravel layer to maintain structural stability

Without landscape fabric, gravel will slowly sink into the soil over time, especially in soft soil, areas trampled by vehicles or people, and areas washed by rain for a long time. Weed control fabric can keep the gravel layer flat and prevent it from being swallowed by the soil.

3. Weed mat is permeable to water but not to soil, preventing water accumulation

Best landscape fabric (especially heavy duty landscape fabric or woven weed barrier fabric) has the following characteristics:

• Water permeability: rainwater can quickly penetrate and will not accumulate on the surface.
• Sediment and sand impermeability: prevents soil from seeping back into the gravel layer.
• Keeps the structure cleaner, more aesthetically pleasing, and improves drainage.

4. Improve the service life and performance of the gravel layer

Properly installed landscape fabric can significantly extend the life and performance of your gravel layers.

When to Use Landscape Fabric Under Gravel?

• Weed suppression: It helps prevent weeds growth naturally through the gravel by blocking sunlight from reaching the soil.
• Separation: Prevents gravel from mixing with soil or sinking into the soil over time.
• Drainage support: Weed mat allows water to drain while keeping layers separated.
• Long-term projects: Ideal for driveways, walkways, patios, or garden paths.

When to Avoid It？

• Short-term projects: Weed fabric might not be necessary for temporary gravel applications.
• Poor drainage soil: Fabric can trap water unless it is highly permeable.
• With organic mulch: Landscape fabric may block nutrients and increase maintenance.

Best Types of Landscape Fabric for Gravel

1.Woven weed mat

Material: Polypropylene
Structure：Woven
Advantages:High load-bearing capacity and good cost performance.
Application：
Low gram weight (70–90g/m²) for temporary use;
high gram weight (100–180g/m²) for driveways and parking areas.

Heavy duty landscape fabric needle punched 

Material: Polypropylene and polyester
Structure: Woven and needle punched 
Advantages: Better breathability, higher strength, longer service life.
Application: Suitable for long-term landscaping and high-value planting areas. Gram weight 120–300g/m².

Non woven geotextile fabric

Material: Polypropylene and polyester
Structure: Needle punching, thermal bonding,
Advantages: Excellent drainage and soil–gravel separation.
Application: Mainly used in drainage ditches and engineering applications. Gram weight 60–300g/m².

Tips for using landscape fabric

It is best to use ground stakes to secure the landscape fabric for gravel. Recommended sizes are 4–8 inch. This prevents lifting caused by wind or gravel movement and ensures long-term weed control.