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Originally Posted by barnetmill
I wonder why they would suggest iron.
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It's needed in the bio-chemistry (electrolytic in particular) of the plant.
Now the reason they suggest it is generally here-say.
Quote:
Originally Posted by barnetmill
I know gardeners like to use iron and suggest putting down a rusty piece of metal to supply iron or other metals.
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Not such a great practice, plants can suffer from iron toxicity when too much is present. Further, too much iron can inhibit the uptake of other minerals.
Quote:
Originally Posted by barnetmill
I have not asked our county extension office, but due to the presence of iron containing stone and also red clay within our acid soil I assumed that there was enough iron locally for us.
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Exactly.