Quick Answer
A three-cut limb removal — also called the arborist's three-cut method — is the safest way to remove any tree limb thicker than 2 inches without ripping bark off the trunk. The three cuts are: an undercut 12–18 inches out, a topcut an inch farther out that drops the limb, and a final cut just outside the branch collar. Skip any of the three and you risk a long bark tear that compromises the tree. The full job takes about 15 minutes per limb in a Newton yard.
Why Three Cuts, Not One
Newton yards are full of mature maples, oaks, and crabapples — and every February storm leaves a few limbs that need to come down. The temptation is to grab a saw and make a single cut at the trunk. Don't.
A single cut through a heavy limb causes the limb to break and tear before the saw finishes. The bark peels down the trunk in a strip 6–24 inches long. That tear is a wound the tree can't seal, and it's a freeway for fungal infection. The three-cut method removes the weight first, then takes the stub off cleanly at the collar.
The International Society of Arboriculture (ISA) treats this as the basic standard for any limb over 2 inches.
Tools You'll Need
- Sharp pruning saw — a 12-inch curved arborist saw is ideal. Sharpen yours before starting; see the pruner sharpening playbook (the same edge-care principles apply to saws).
- Loppers for branches under 1.5 inches (no three-cut needed)
- Safety glasses — falling bark and debris go in your face, not the ground
- Helper if the limb is over 4 inches in diameter or higher than shoulder height
For limbs over 6 inches in diameter or above 12 feet, hire a certified arborist. This guide is for limbs you can reach standing on the ground.
Step 1 — Find the Branch Collar
The branch collar is the slightly swollen ring of bark where the limb meets the trunk. On most species in Newton — maples, oaks, and crabapples especially — it's clearly visible. The collar contains specialized cells that seal the wound after pruning. You must leave it intact.
Don't cut flush to the trunk. Don't cut beyond the collar leaving a stub. The cut is just outside the swollen ring.
Step 2 — Make the Undercut
Move 12–18 inches out from the trunk along the limb. Saw upward from below until the cut is about one-third through the limb's diameter. Stop. The undercut is what prevents bark tear — when the limb starts to fall in the next step, it snaps cleanly at the undercut instead of stripping bark backward toward the trunk.
For a 4-inch-diameter limb, the undercut goes about 1.5 inches deep. Don't push it deeper or the saw binds.
Step 3 — Make the Topcut
Move 1 inch farther out from the undercut along the limb. Saw downward from the top. As the saw nears the depth of the undercut, the limb breaks free and falls. The break stops at the undercut — no bark tear toward the trunk.
You're now left with a 12–18 inch stub on the tree.
Step 4 — Make the Final Cut at the Collar
Now make the clean final cut just outside the branch collar. Saw from above, angled slightly so the cut runs parallel to the collar's slope. Don't cut into the collar itself, and don't leave a long stub.
When done right, the cut surface is a circle slightly angled relative to the trunk, with the swollen collar still visible just below the cut. The wound will seal completely within 1–3 growing seasons.
What to Do With the Wood
Newton's yard waste pickup takes branches under 4 feet long. Cut the removed limb into sections. Don't paint the wound — research from ISA shows wound dressings slow healing rather than help. Leave the cut surface clean and dry. For top-dressing the root zone after major limb work, see How to Layer Soil and Compost in a New Wellesley Raised Bed (the compost math scales to tree-feeding too). For neighbor context on diagnosing salt damage that often shows up alongside winter limb damage, see How to Diagnose Salt Damage on a Belmont Lawn. The 2026 decorative-stone follow-up sits at Decorative Stones in Brookline for landscape design after tree work.
For tree care planning across the season, browse the Plant Establishment & Tree Planting collection and the Newton landscape supply page for delivery scheduling. The ISA Trees Are Good public-education site has the authoritative homeowner resources on pruning standards.
