I'm putting up a trellis for food growing vines. I have some heavy aluminium wire that would work well but I'm concerned about aluminium toxicity. Does anyone out there know enough about aluminium to say whether it's safe to use it around food plants?
Aluminum isn't a poison until ph4, if your rain is ph 4 or anything close you have more problems than your trellis. Aluminum is ever present in soil and it doesn't hurt anything until acid rain get's out of hand.
In my experience, plants do not like touching metal ANYTHING, unless it's coated with plastic. Metal in general, but especially aluminum transfers heat and cold very efficiently and the plant doesn't like that. I gave up trying to use it a long time ago.
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