Wiring Technique on bonsai
What's Happening
Bonsai wiring applies continuous pressure to branches to redirect growth direction. Aluminum and copper wires are the industry standards. Aluminum wire (1.0-4.0mm diameter) is soft, malleable, and ideal for beginners—it bends easily by hand without heat treatment. Copper wire (0.5-3.0mm) is stronger, holds shapes better for thick branches, but requires annealing (heating to 800°F then quenching) to soften before use. Both must be sized correctly: wire diameter should be 1/3 the branch thickness for adequate holding power without cutting in.
How to Fix It
- 1
Measure branch thickness with calipers or eyeball comparison—select wire approximately 1/3 that diameter
- 2
Anchor wire firmly in soil at pot rim or wrap around trunk base before applying to branches
- 3
Wire at 45-degree spiral angle up the branch—not too tight (cuts in) or too loose (slips)
- 4
Bend wired branch immediately after application while wire is supporting—hold branch with one hand, bend with other
- 5
Remove wire by unwrapping in reverse direction once branch holds position (typically 3-6 months)—never cut off as this damages bark
How to Prevent It
Select wire diameter at approximately 1/3 the thickness of the branch being wired. Apply wire at 45-degree angle to branch for optimal holding and minimal marking. Check wired branches every 4-6 weeks—remove before wire bites into bark as branch thickens.