When a mature elm or ash develops a crack in its main scaffold limb or a weak union between co-leaders, the instinct is often to remove it. I do something different. I fit a flexible cable high in the canopy, sometimes add a brace lower down, and monitor it over time. It works. It matters here, because we still have the continent's largest urban elm canopy, and I'd rather keep a tree standing than watch it fall.
What cabling & bracing actually involves in St. Boniface
Cabling and bracing are two related techniques I use to support a tree's structure without removing it. A cable is a flexible steel line I fit between two or more main leaders or branches, typically high in the crown where the weight concentrates. The cable doesn't lock the branches rigid; instead, it allows natural movement while preventing the split from widening under wind or snow load. A brace is a more rigid connection, usually fitted lower on the trunk or at the point of weakness itself, and I use it when the crack or union is lower and more critical to the tree's stability.
The goal is not to make the tree perfect again. The goal is to buy time. A properly cabled tree can stand for decades more, compartmentalize its wound, and remain part of your landscape. I check it every year or two to make sure the cable hasn't cut into bark, the attachment points are sound, and the tree is healing well.
Why it matters
A tree with a cracked scaffold limb or a weak co-leader union is at real risk. Heavy wet snow, windstorm, or even the tree's own weight as it grows can cause that limb to fail suddenly. If it splits all the way through, you lose a major structural branch, and the tree may not recover. If it falls outward, it can damage property or injure someone. Removal is always an option, but it's also final.
Cabling lets me intervene before that happens. I stabilize the weak point, reduce the mechanical stress on the crack, and give the tree a chance to compartmentalize the wound and keep growing. For a healthy elm or ash with good foliage and no disease, this is often the right call. It's also cheaper and faster than removal, and you keep the shade, the wildlife habitat, and the character the tree brings to your property. In Winnipeg, where our elm canopy is already under pressure, that matters.
When to schedule cabling & bracing in Winnipeg neighbourhoods
I typically spot trees that need cabling during a routine inspection or after a storm. You might notice a visible crack running through a branch or along the main trunk, or you might see two leaders that form a very narrow, V-shaped union with bark trapped between them. Sometimes the split is fresh and obvious; sometimes it's been there for years and you've never noticed it. Heavy wet snow in late spring, or a windstorm, often triggers the failure that brings you to call me.
The best time to cable a tree is in late winter or early spring, when the tree is dormant and I can see the structure clearly without full leaf cover. However, if a tree has split or cracked during a storm, I can assess it immediately and cable it as soon as weather permits. I won't cable an elm that has been tagged by the City or by a land manager for Dutch elm disease treatment or removal; no cable saves an infected tree, and I'd rather tell you straight than waste your money. If there's any doubt about the tree's health or the City's intentions, I check the rules for your address before I recommend anything.
How it works
The process begins with a phone call or email. I ask you to describe what you've noticed: a crack, a lean, a branch that looks weak. If it sounds like a cabling candidate, I schedule a site visit. When I arrive, I climb the tree (or examine it from the ground with binoculars if it's small) to assess the union or crack, the tree's overall health, and the best points for cable attachment. I look for sound, thick branches or the main trunk itself as anchor points, and I measure the span to determine the cable length and diameter I'll need.
Once I've confirmed the work is sound, I provide a free estimate and explain what I'll do and why. If you approve, I return with my climbing gear and cable kit. I climb into the tree, position the cable between the two leaders or branches, secure it with hardware designed to distribute load without cutting bark, and tension it to support the limbs without locking them rigid. The whole process typically takes a few hours depending on tree size and access. Afterward, I clean up any debris, photograph the installation for your records, and discuss monitoring with you. I'll come back annually or as needed to inspect the cable and make sure the tree is healing well.
The situations I run into in Norwood
Weak co-leader unions. Many trees, especially elms and ashes, grow two or three main leaders from a single point. If those leaders form a narrow, V-shaped angle with bark included between them, the union is mechanically weak. Wind or snow can force them apart. I cable the leaders together to keep them stable and allow the tree to reinforce the union over time.
Cracked or split scaffold limbs. A large branch may develop a radial crack running along its length, often from a storm, frost crack, or the tree's own weight. If the crack is not yet complete, cabling can stabilize it and prevent it from splitting all the way through. Once a limb has failed completely, it usually needs to be removed.
Included bark problems. When a branch grows at a very acute angle to the trunk, bark can become trapped in the crotch. This creates a weak point that may fail under load. Cabling supports the branch and reduces stress on the weak union.
Multiple-cable systems. A very large tree with several weak points may need more than one cable. I design a system that addresses the primary structural issues without over-constraining the crown. The tree needs to move in wind, or the cables become a liability rather than a help.
