How to Cable a Large Split Tree

Cabling a large split tree is a crucial technique for preserving the health and structural integrity of mature trees. This method involves installing hardware to support weak or damaged limbs, preventing further splitting and potential failure. In this article, we’ll explore the process of cabling a tree, its benefits, and when it’s necessary. Certified arborist Matt Foti demonstrates the proper technique for installing cables and bolts to save a troubled tree.

Understanding Tree Cabling

Tree cabling is a specialized arboricultural practice used to provide supplemental structural support to trees. This technique is particularly useful for trees with weak branch unions, co-dominant stems, or those that have suffered storm damage.

When Is Tree Cabling Necessary?

Tree cabling becomes necessary in several situations:

• Trees with co-dominant stems or V-shaped branches
• Trees with split trunks or large cracks
• Trees with heavy, overextended limbs
• Trees damaged by storms or other environmental factors
• Historically or aesthetically valuable trees that require preservation

Benefits of Tree Cabling

Properly executed tree cabling offers numerous advantages:

• Prevent further splitting of weakened branches
• Reduce the risk of tree failure and property damage
• Extend the lifespan of mature trees
• Preserve the natural shape and beauty of the tree
• Provide an alternative to removing large, valuable trees

The Tree Cabling Process

1. Climb into the tree to a point that’s two-thirds of the way above the tree’s main crotch.

2. Drill holes through two large limbs, one on either side of the tree.

3. Insert an eyebolt into each hole and secure it with a hex nut.

4. Install a metal thimble to each eyebolt, then thread a steel cable through the thimbles.

5. Pull the cable taut by tightening the nut on one of the eyebolts.

6. To prevent the tree from splitting below the crotch, drill three holes through the trunk. Be sure to crisscross the holes for maximum support.

7. Use a large gouge and mallet to cut a counter-bore hole into the tree to accommodate a washer and two hex nuts.

8. Put a washer and two hex nuts on one end of a long threaded rod, then tap it through the hole in the trunk. Repeat for the remaining holes.

9. Place a washer and two hex nuts on the opposite end of each threaded rod and tighten with a wrench.

10. Trim off the protruding end of the rods with a hacksaw.

Considerations for Tree Cabling

While tree cabling can be an effective solution for preserving trees, there are several factors to consider before proceeding with this method.

Tree Health and Viability

Before cabling, assess the overall health of the tree. Cabling is most effective for trees that are otherwise healthy but have structural weaknesses. Trees with extensive decay or disease may not be suitable candidates for cabling.

Ongoing Maintenance

Cabled trees require regular inspection and maintenance. The hardware should be checked periodically for wear, and adjustments may be necessary as the tree grows. Regular professional inspections ensure that the tree remains healthy and the cabling system functions correctly. Matt Foti likens this to maintaining the brakes in a car, a vital and ongoing task.

Alternatives to Tree Cabling

While cabling can be an effective solution for many trees, it’s not always the best or only option. These alternatives may also be appropriate:

• Bracing: Similar to cabling, but uses rigid rods instead of flexible cables.
• Pruning: Strategic pruning can sometimes alleviate stress on weak branches or co-dominant stems.
• Tree removal: In cases where the tree poses a significant safety risk, removal may be the best option.

Assessing Alternatives

A thorough assessment by a certified arborist can determine whether cabling or an alternative method is the most suitable for your tree. Variables such as the tree’s age, health, and the specific structural issues play a crucial role in this decision-making process. Consulting with professionals ensures that the selected method aligns with the tree’s unique requirements.

DIY vs. Professional Tree Cabling

While the process of cabling a tree may seem straightforward, it’s a job best left to professional arborists. Here’s why:

Risks of DIY Tree Cabling

• Improper installation can lead to further tree damage
• Incorrect assessment of tree health and structure can result in ineffective cabling
• Working at heights without proper training and equipment is dangerous

Attempting to cable a tree without expertise can compromise the tree’s health and safety. The risks associated with DIY cabling underscore the importance of hiring trained professionals.

Benefits of Professional Tree Cabling

• Arborists have the necessary training and equipment to safely work in trees.
• Certified arborists understand the proper techniques to minimize damage to the tree.
• Professionals can accurately assess tree health and determine the best cabling strategy.

Importance of Certification

Hiring a certified arborist ensures that the individual has met industry standards for training and knowledge. Certifications demonstrate a commitment to professional excellence and adherence to best practices in arboriculture.

Our Conclusion

While tree cabling requires specialized skills and equipment, the benefits of extended tree life and reduced risk of failure make it a worthwhile investment for many homeowners. Always consult with a certified arborist to determine if cabling is the right solution for your tree.

By investing in a professional cabling system, homeowners can enjoy the beauty and shade of their mature trees for many years to come. Regular maintenance and inspections will ensure that the system continues to provide the necessary support, safeguarding both the tree and the property.