What is a crude source of copper for horses, ?

what plants or herbs or what can i plant in his field.
whether they where in the wild where on earth or what would they eat for copper.
Answers:   
Hey Charm

In the wild they would usually get through tree bark and sometimes dirt (yes dirt) if it had traces of copper. There are probably plants/weeds near small traces but you'll notice all the trees in a pasture are chewed up when the horses/cows are scarce in minerals.

If you are looking to supply your horses with extra minerals (most commercial feed should supply CLOSE to enough), use a mineral salt block.

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naturally horses can get copper from nibble on tree barks or from some plants, but you're probably better off getting him a copper injection which can be administered orally to ensure hes getting it for certain
xx
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