FerroGreen - Ferrous Sulphate Solution - 30% Liquid Sulfate of Iron (5 Litres)

FerroGreen - Ferrous Sulphate Solution - 30% Liquid Sulphate of Iron (5 Litres)

30% FERROUS SULPHATE SOLUTION

IRON (II) SULPHATE SOLUTION (6% Fe)

Technical grade

USES FOR IRON SULPHATE

• It is used as a lawn conditioner and fertiliser.  
• It is the main active ingredient in many commercial moss killer products, as it turns moss black.
• Industrially, ferrous sulfate is mainly used as a precursor to other iron compounds.
• It is a reducing agent, mostly for reducing chromate in cement.
• Used in the manufacture of inks, including iron gall ink.
• It is used as a mordant for wool dyeing.
• Ferrous sulphate can also stain concrete and some limestones and sandstones a yellowish rust colour.
• Woodworkers use ferrous sulphate solutions to colour maple wood a silvery hue.

In horticulture, it is used for treating iron chlorosis (yellowing of foliage caused by iron deficiency). Although not as rapid-acting as iron chelate, its effects are longer-lasting. It can be mixed with compost and dug into the soil to create a store which can last for years. Ferrous sulfate is sometimes added to the cooling water flowing through the brass tubes of a turbine condenser. It forms a corrosion-resistant, protective coating inside the tube.

It is used as a traditional method of treating wood panels on houses, either alone dissolved in water or as a component of water-based paint.

Treatment Application Rates for Lawns

Application rates can vary greatly depending on the desired effect and the specific lawn. No two sets of circumstances will be the same, and therefore a small area should be tested to satisfy yourself of suitability.

For Hardening and Conditioning Lawns

Test a small area with a 3% Ferrous Sulphate Heptahydrate solution (ie. 30mls/1L of water). If this does not give the desired effect, you can use a stronger solution, up to a maximum of 15% Ferrous Sulphate Heptahydrate (150mls/1L of water).

A typical application for greening of grass would be 30 ml-60 ml per Litre.  Be aware that at dilutions of 150 mL per Litre, blackening of moss will occur.  For this reason, Ferrous Sulfate is often included as an active ingredient in commercial lawn moss-killing products.  Over-application could also blacken the grass itself.

The suggested application rate for Ferrous Sulphate solutions is about 5 sq m per Litre.

Please be aware that Ferrous Sulphate solution will cause staining if spilt or applied to hard surfaces such as concrete.  These brownish stains are effectively a form of rust, and to remove them one will need to use an acid solution like Oxalic acid (used as a 5% solution).

When treating lawns with ferrous sulphate, keep pets off the surface for at least one week. This protects their well-being and prevents residue transfer onto hard surfaces (i.e. brown staining).

For application on agricultural pasture land/paddocks etc use at the same rates as above. Animals like horses must be kept off grasslands for at least 4 weeks before being allowed back to graze.

An overuse of Ferrous Sulphate can be harmful if the land being applied to has a low pH (Acidic), as Ferrous Sulphate is naturally acidic with a pH of 2.5. We also recommend treating the entire lawn rather than specific areas to prevent some patches from becoming more acidic than others.

NOTE: This information is a guideline and is provided in good faith. We cannot be held responsible for any adverse effects that may be experienced as a result of use of the above product.

Acidifying Soil - Reducing pH with ferrous sulphate:

To reduce the pH of soil by 1 unit (e.g., from pH 7 to pH 6), you would need 6.75L to 13.5L of ferrous sulphate solution per 100 sq ft of soil. This should be dug into a depth of 6 to 10 inches. As the ferrous sulphate is biologically degraded, acidification occurs over several months, so the process is gradual. To avoid building up too much iron in the soil, wait 12 months before testing the pH again and repeating the process if necessary.

Health & Safety

R-Phrases: R22 Harmful if swallowed. R36/38 Irritating to eyes and skin.

S-Phrases: S46 If swallowed, seek medical advice immediately and show container or label.

PLEASE NOTE: This product is not for human or animal consumption.