Best iron, magnesium and manganese Supplement

leatherback

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I have a big tub of iron fertilizer for gardenshrubs. I just added this weekend and will do again every 2 months or so till fall sets in..
 

Paradox

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ceriano

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Paradox

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I ordered that and miracid. Let’s see if it helps with yellowing.
Do you also use Cal/Mag supplement?

No I dont
I believe the trace minerals of Cal/Mag are delivered via the seaweed in the fish emulstion+seaweed fertilizer I use.
 

Paradox

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@ceriano
Just a word of caution
Calcium and magnesium are required by plants in very small quantities (ie trace elements).
Most fertilizers contain them in the ratios that are needed by the plants.
Dumping extra calcium and magnesium on your plants might do more harm than good.

I use iron because I had a problem with a tree that seemed to have a deficiency.
I dont use it at every feeding unless I have a tree with a problem.
 

leatherback

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For magnesium you can use Epsom salts (magnesium sulfate).
It is what I use too. Now in early spring, all my pots get a few little blue balls.
Just a word of caution
Epsom slats are highly concentrated. I put the kernels in 2-3 spots at the edge of the pot, and water a lot in the 2 weeks after giving it. Still, it may dry out the roots if it gets sunny and dry unexpectedly. Apply with loads of caution and only sparingly
 

ceriano

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