Are Fig Tree Roots Invasive?
While fig trees (Also known as Ficus Trees) are valued for their ornamental and ecological benefits, they are notorious for their invasive root systems. The roots of many fig species, particularly those grown in open spaces, are known for their aggressive nature. If not properly managed, they can extend far beyond the tree’s canopy, causing issues with surrounding structures and other plants.
How Deep and Far Do Fig Tree Roots Spread?
Fig tree roots are typically shallow but widespread. They can extend horizontally up to 15 meters (about 50 feet) from the main trunk and are usually found in the top three feet of soil. While they do not generally root deeply, in porous, permeable soils, roots may reach a depth of about 6 meters (20 feet). The extensive root system is a double-edged sword; it allows the tree to thrive in less fertile soil but can become a problem if the tree is located near buildings or other structures.
The Roots of a Moreton Bay Fig Tree (Ficus macrophylla) which is native to eastern Australia.
What is the Problem with Fig Tree Roots?
The primary concern with fig tree roots is their potential to damage infrastructure. Their strong, woody roots can disrupt sewer lines, foundations, and even walls if the trees are planted too close to these structures. The invasive nature of fig tree roots makes them a significant concern for homeowners and urban planners alike.
Although they are pretty, they damage not only sewer pipes and drains but also paths, walls, and building foundations. – The Relining Company
Fig Tree Roots and Foundation Damage
A breach of a house foundation. Primarily caused by Trees with buttress roots such as Fig Trees.
Risk to Foundations
The invasive roots of fig trees seek moisture and can be particularly destructive if located too near to house foundations. It is advisable to plant these trees at a substantial distance, ideally at the far end of a backyard, depending on the yard size and the specific fig variety’s invasiveness.
The invasive nature of fig tree roots can lead to several issues:
- Structural Damage: Roots can destabilize foundations, break through walls, and lift pavements, causing significant property damage.
- Plumbing Issues: They are known to invade sewer lines and plumbing systems, leading to costly repairs.
- Impact on Biodiversity: By outcompeting other plants for nutrients and space, fig roots can disrupt local plant communities .
How Close to a House Can You Plant a Fig Tree?
To minimize the risk of damage, it is generally recommended to plant fig trees at least 7.5 meters (about 25 feet) away from houses and other structures. This distance helps to ensure that the roots do not interfere with building foundations or underground utilities.
Aim to keep it at least 25 feet (7.6metres) away from structures – CouchtoHomestead.com
Managing Fig Tree Roots
To manage the invasive nature of fig tree roots effectively:
- Choose an Appropriate Planting Location: Plant fig trees away from structures and areas where their roots could cause damage.
- Use Root Barriers: Installing root barriers can help direct the roots downward and limit horizontal spreading.
- Regular Maintenance: Regular watering and fertilization can discourage roots from extending too far in search of nutrients.
Although it is possible to use root barriers or other tools to prevent fig root growth from invading foundations, this is a lot of work for very little reward. – Pepper’s Home & Garden
Final Advice on Fig Tree Roots
While fig tree roots can be invasive and pose challenges in urban and residential settings, proper management and planning can mitigate these issues. For those dealing with existing fig trees near their homes or planning to add one to their landscape, understanding the characteristics of these roots and implementing strategic planting and maintenance can help enjoy the benefits of fig trees without undue concern.
For professional advice and services related to tree management and removal, consider visiting Tree Removal Melbourne for more information.
In summary, fig trees, while beautiful and ecologically beneficial, require careful consideration due to their invasive root systems. Planning, regular maintenance, and the use of barriers can help manage these challenges effectively.
