Tie down wire size

What size and type of wire should be used for tying down trees to the pot?

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2mm aluminum or 18 guage steel

Larger for larger trees

18 Guage is 1mm but the metal is stronger

Copper is too damned expensive to use for tying down trees

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I use 17 and 14 gauge galvanized steel electric fence wire.
You can buy it at any farming supply store.

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