Which Iron Should I Use?

Iron chlorosis

Applying Iron the the Soil

Iron products can be applied at any time of the year.

But iron products applied to the soil should be applied before growth starts at the beginning of the year. This is usually in mid January through about March.

Any of the iron products can be applied to the soil. But the chemistry of the soil will determine which of the products will work and which ones will not.

Viragrow's 5 pound EDDHA iron chelate

The only surefire products that will work in all of the different soils are the iron products containing a chelate called EDDHA.

Other products may work if the chemistry is just right but EDDHA has its own chemistry built in that insures that it will work. Only an ounce or two is needed for each plant once a year. But

if you have a lot of plants you should consider saving some money and buying Viragrow's 5 pound bag.

Applying iron to the leaves

The other option is to apply iron to the leaves. Of course this has to be done only when leaves are present. This means that foliar applications of iron are done at times of the year when the problem is developing or has developed.

Any of the water soluble iron products can be used as foliar sprays. On products not containing EDDHA the water pH should be adjusted to pH=7 or distilled water should be used.

The spray will penetrate the leaves much more effectively by mixing a surfactant or wetting agent like EZ Wet in the spray mix before spraying. If you don't use a surfactant then most of the iron
sprays will run off the leaf surface and not penetrate inside the leaf.

When spraying just wet the leaves until you start to see water falling from them. You will most likely have to respray three or four times a few days apart to get dark green foliage.

Iron sprays do not keep for very long so use all of the product and don't mix more than you need.

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