The decision: removal vs structural support
A mature DFW tree with a structural defect — codominant stems, included bark, weak attachment, history of branch failure — often gets removed by default. But many structurally compromised trees can be safely retained with ANSI A300 Part 3 structural support systems. The decision depends on tree value, defect severity, target (what's underneath), and owner preferences. For heritage live oaks, pecans, and post oaks that anchor a property, structural support is almost always worth considering before removal.
Static cabling — the workhorse system
Steel cable or synthetic rope (Cobra brand or equivalent) installed in the upper canopy to redistribute load between codominant stems. We use through-bolt hardware with thimbles and amon-style terminations. Cable height typically 2/3 of the way from the union to the canopy top — high enough to provide leverage, low enough to remain in robust wood. Single cable for two-stem situations; multiple cables for complex defects.
Dynamic cabling — flexible support
Synthetic rope-based systems (Cobra, Boa) that allow some natural sway while preventing catastrophic failure. Preferred for younger trees still developing structural wood, or where the goal is to encourage adaptive growth response. Less invasive than steel hardware.
Bracing rods — for split or splitting stems
Threaded steel rods installed through the trunk at the level of a developing or actual crack. The rod mechanically prevents the crack from propagating. Often paired with cabling above to relieve load. Critical for valuable trees with active splits that would otherwise lose major scaffold branches.
The installation process
Pre-installation: detailed structural assessment, photo documentation, owner sign-off on plan. Installation: climbing arborist (TCIA-trained for aerial work) installs hardware following ANSI A300 Part 3 specifications. Post-installation: annual inspection (included in our PHC programs), tension check, hardware integrity verification. Cable systems typically last 7-10 years before requiring replacement.
When cabling won't save the tree
Severe decay in critical structural wood, advanced root system failure, vertical cracks running into the trunk, and trees with multiple major defects are usually beyond what cabling can stabilize. We're honest about those cases — sometimes removal is the right answer. But we look hard for the option to save first.
DFW pricing
Single steel cable installation: $400-$900 per cable. Bracing rod installation: $300-$700 per rod. Multi-cable system on a large heritage tree: $1,500-$3,500. Annual inspection: $100-$200. All systems documented in writing for liability and insurance purposes.