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Bonsai Wire Size Guide: Which Thickness to Buy

Wire thickness needs to roughly match branch thickness — too thin and it won't hold a bend, too thick and it's clumsy and can damage a young branch. Both our wire sets cover the same practical range, just at different total lengths.

Our picks

  1. Anodised Aluminium Bonsai Training Wire — Multi-Size (25m) — 1mm/1.5mm/2mm, 25m total
    Training Wire 1mm/1.5mm/2mm, 25m total

    1. Anodised Aluminium Bonsai Training Wire — Multi-Size (25m)

    Covers the three most commonly needed thicknesses (1mm/1.5mm/2mm) — a sensible first wire purchase for one or two young trees.

    View details & Amazon link
  2. Bonsai Wire — 5-Size Aluminium Starter Set (50m) — 1mm-3mm, 50m total
    Training Wire 1mm-3mm, 50m total

    2. Bonsai Wire — 5-Size Aluminium Starter Set (50m)

    The fuller range (1mm-3mm) at double the total length — better value once you're wiring more than a single young tree, or working on thicker branches.

    View details & Amazon link
How we pick these lists: every product above is a real, currently-listed item from our own 45-product catalogue — we don't add anything to a guide that isn't already on the site. See our general care guide for the fundamentals, or browse the full shop for everything else.