Australian plants are used to the harsh climate. However, they sometimes struggle to find water and their roots will travel long and far to reach the necessary nourishment.
Because of this, trees and plants near suburban areas can easily cause damage to surrounding infrastructure if left unattended. Root systems can extend twice the width of the tree canopy above ground, making even small trees a potential hazard.
Root barriers are an ideal solution to controlling root growth without compromising the development and stability of the plants. They create a physical boundary that redirects roots rather than stopping them entirely.
Unattended root growth often causes burst pipes, buckling concrete or entangled foundations. With a root barrier, your tree can grow strong and healthy while also remaining controlled.
In this article, we'll discuss how root barriers work and why they're essential for protecting your property and landscaping.
When Aussie plants and trees get low on water supply, the roots will disperse in search for more. The spreading roots can damage surrounding wildlife, walls, footpaths and pipes.
Installing a root barrier places a wall around the base with enough room for roots to grow and stabilise the plant. This prevents roots from spreading too far or in certain directions.
Root barriers are especially important for protecting these vulnerable areas:
Unlike concrete or sheet metal, root barriers are a far easier solution for preventing unwanted root invasion. They're flexible, lightweight and won't harm the tree or restrict necessary root development.
It is extremely difficult to fix an underground burst pipe. But typically, that is where roots will be drawn toward because of the moisture.
Roots can power through concrete and cause thousands of dollars in damage. You can avoid these costly repairs by installing root barriers before planting or during early tree growth.
Root barriers function as physical guides that redirect root growth rather than blocking it completely. When a root encounters the barrier, it grows downward along the surface until it reaches the bottom edge.
At this point, the root naturally redirects away from the barrier and continues growing in a safer direction. This process doesn't harm the tree because roots are constantly exploring multiple pathways for water and nutrients.
The barrier material is impenetrable to roots but allows water and air to pass through the soil around it. This maintains healthy soil conditions and doesn't create waterlogged pockets that could rot the roots.
High-density polyethylene barriers are UV stabilised to prevent degradation from sunlight exposure at ground level. They maintain their structural integrity for decades underground, providing long-term protection without replacement.
The key to effectiveness is proper installation depth and secure sealing at joins. Most applications require barriers extending 450-600mm deep, depending on the tree species and soil conditions.
Here at All Stake Supply, we offer UV stabilised, high-density polyethylene root barriers to ensure long-lasting protection. They are also environmentally friendly and completely inert in the soil.
When installed and tightly sealed, the moisture in the ground is retained on both sides of the barrier. This means you don't just prevent roots from spreading to unwanted areas, but you help maintain consistent soil moisture for plant health.
If you have a house or property and plan to plant trees on one side of the structure, placing a root barrier in between will force roots to grow away from the house. This 450mm depth barrier works perfectly for smaller ornamental trees and standard residential applications where moderate root control is needed.
For larger tree species or areas with deeper root systems, this 600mm depth option provides extra protection against vigorous root growth from established eucalypts and native hardwoods.
Installation steps include:
This is why root barriers are popular. They are effective and versatile enough to use in partial or complete encirclement depending on your specific needs.
Different root management approaches suit different situations. Understanding the options helps you make the right choice for your property.
Root barriers stand out as the most practical long-term solution for most residential and commercial applications. They prevent problems before they start rather than attempting to fix damage after it occurs.
The upfront investment in quality barrier material pays for itself by avoiding expensive repairs to infrastructure. A single burst pipe repair can cost more than protecting an entire property line with barriers.
Root barriers often work best as part of a complete site management strategy. Other complementary products can enhance your landscaping and erosion control efforts.
For sloped areas where both root control and erosion prevention matter, combining barriers with erosion control solutions creates comprehensive protection. Stabilising soil while managing root growth prevents multiple problems simultaneously.
Weed suppression around newly planted trees reduces competition for water and nutrients. This 0.91m wide woven mat fits perfectly around individual trees and garden beds, allowing water penetration while blocking unwanted vegetation.
For waterway protection or areas requiring natural filtration alongside root management, these 200mm coir logs provide biodegradable erosion control that won't interfere with properly installed root barriers downstream.
Prevent invasive or unwanted root expansion easily and effectively today. Proper planning and installation of root barriers protects your investment in both landscaping and infrastructure.
If you need root barriers or other erosion control products, then look no further. Contact our friendly team at All Stake Supply by calling 1300 130 123 for more information.
