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Anodized Aluminum 4.0mm Bonsai Training Wire 250g Large Roll (23 feet) - Choose Your Size and Color (4.0mm, Brown)

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Size: 4.0mm


Color: Brown


Features

  • QUALITY WIRE: Grow A Bonsai Tree's anodized aluminum wire is easy to work with, holds its shape, is resistant to corrosion, and comes in your choice of beautiful colors designed to blend in with or complement your tree.
  • INDIVIDUAL ROLLS: 250g of wire so you can stock up on exactly the size you need. Replenish your Grow A Bonsai Tree Starter Set wire or supplement your existing wire supply using these large rolls.
  • 23 FEET OF WIRE: 250g of 4.0mm gauge wire translates to 23 feet (7m) of wire. Thicker gauge ideal for use on larger branches.
  • EASY TO BEND: Anodized aluminum training wire is easier to bend than copper, making it better for beginner bonsai trainers, convenient for experienced bonsai artists, or great to use as floral wire. Reuseable, and will not damage your tree.
  • CHOOSE YOUR COLOR: Available in classic black or a copper-colored brown to blend in with your bark. All colors are anodized, and have a subtle metallic finish. Choose your preference!

Description

Grow A Bonsai Tree is on a mission to make it easier and more pleasant for you to, well, grow a bonsai tree! With our line of anodized aluminum wire, we aim to make it an affordable and pleasant experience to stock up on wire and train your bonsai trees, whether you are new to the hobby or an experienced bonsai artist. We offer our bonsai training wire in both a starter kit to get a foundational stock of the first 5 sizes, and in larger 250g individual rolls for every half-mm size from 1.0mm - 4.0mm, plus 5.0mm - 6.0mm. All the sizes you need, immediately available Any aluminum bonsai wire you use should always be anodized, as that makes it both materially stronger and corrosion resistant. The anodization process alters the crystal structure near the surface of the wire, giving it a thin oxide layer that protects the integrity of the metal. Bonsai wire training goes hand in hand with the art of growing bonsai trees. When it comes to achieving the amazing aesthetic bonsai trees are known for, wiring is the way to get those beautiful results. Bonsai wire commonly comes in either copper or aluminum. Anodized aluminum is the most popular type of wire for bonsai, not only due to its affordability but also in part due to material differences. It is more easily malleable than copper, while still possessing all the needed strength. Our 250g bonsai wire comes in 2 stylish colors: a neutral black and a copper-colored brown to complement your branches. Take your pick! Our anodized aluminum wire is soft enough that it is gentle on your tree and less likely to cause scarring, while strong enough to allow for advanced training. Pictured above is the 2.0mm size in brown, which perfectly fits our bonsai drainage mesh, making it easy to attach to your bonsai pot or anchor your tree. Want to sample the sizes to see which ones you'd like large rolls of? Or want to give someone the gift of a new hobby? Try our 5-size starter set.

Material: Aluminum


Color: Brown


Brand: Grow A Bonsai Tree


Finish Type: Polished


Item Weight: 250 g


Brand Name: Grow A Bonsai Tree


Recommended Uses For Product: Bonsai training, floral wire, craft wire


UPC: 646223604214


Number of Items: 1


Item Length: 23 feet


Manufacturer: Grow A Bonsai Tree


Number of Packs: 1


Unit Count: 22.97 Feet


Model Number: UK_GABT-BTW-1-BR-4.0


Part Number: UK_GABT-BTW-1-BR-4.0


Item Weight: 250 g


Item Diameter: 4 millimeters


Wire Diameter: 4 millimeters


Item Dimensions: 7 x 6 x 0.75 inches


Item Thickness: 4 millimeters


Color: Brown


Finish Type: Polished


Item Shape: Round Rod


Item Form: Coil


Tensile Strength: 100 megapascals


Material: Aluminum


Grade Rating: Hobbyist


Frequently asked questions

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Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

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View our full returns policy here.

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Top Amazon Reviews


  • Good value here for a large spool of wire
Size: 1.0mm Color: Black
This is a large spool of wire that I will probably be using for years. It’s very durable and pliable so that makes it easy to use. I like the black color which looks great. The wire is easy to bend and soft on the hands. Good value here for a quality product.
Reviewed in the United States on November 3, 2025 by Deal Detective

  • Very good
Size: 1.0mm Color: Black
A good wire just like the once you buy everywere else. But this 1 mm is really hard to find.
Reviewed in the United States on July 10, 2026 by Dozeren

  • Really nice wire
Size: 6.0mm Color: Brown
FWIW, I have no bonsai experience. That said, I also have a Velvet Viking JP Maple that needed some shaping. I checked YouTube and did the thing. The wire worked just like the YouTube guy said and here we are. The wire is a beautiful coppery-brown, strong, light, bends easily, and cuts easily. This absolute amateur gives it ⭐️⭐️⭐️⭐️⭐️. ... show more
Reviewed in the United States on September 22, 2024 by La La La

  • Bonsai wiring
Size: 3.0mm Color: Black
Working well to shape trees
Reviewed in the United States on April 7, 2026 by Amazon Customer

  • This is the wire you want
Size: 3.5mm Color: Brown
There is lots of wire on Amazon but I keep coming back to this brand because of how easy it is to use and how well it holds. Will continue to purchase.
Reviewed in the United States on February 23, 2026 by Steven Green

  • Good flexibility.
Size: 3.0mm Color: Brown
Easy to use and thick enough.
Reviewed in the United States on August 15, 2026 by Soji

  • Easy to bend.
Size: 5.0mm Color: Black
Awesome quality!
Reviewed in the United States on June 4, 2026 by Gabriel

  • on my big bonsai.........
Size: 3.0mm Color: Black
I use as needed on my big bonsai.........
Reviewed in the United States on May 23, 2026 by Patricia Wilson

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