Plant Doctor Liquid Iron

Plant Doctor Liquid Iron

Regular price $22.50 $0.00
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Plant Doctor Liquid Iron Fertiliser - 7% Iron; 3% Sulphur

Supercharged with Fulvic acid

Provides a highly available form of liquid Iron (Fe) with Sulphur..

  • Can be applied to the leaves (Foliar) or directly to the soil.

Application rate:

Minimum dilution rate: 1:50







Apply every 4-12 weeks.

Ornamental Plants

10-25ml/10litres water


Apply every 4 weeks in growing season or as required.




Apply fortnightly or as required.

Trees, Fruits, Nuts & Grapevines



Apply every 8-12 weeks or as required.

Broadacre crops


Apply as required with normal program


Iron (Fe) = 7%

Sulphur (S)= 3%

Did you know this about how iron works in plants?

Iron (Fe) is a vital micro-nutrient required by plants to form chlorophyll. And chlorophyll is what gives plants/lawn their green colour. Iron deficiency (chlorosis) occurs when there is either not enough iron in the soil, or the iron is tied up and unavailable due to high pH (alkaline soil), or poor aeration. It can also be induced by an over-abundance of calcium in the soil or an over-application of lime.

Iron chlorosis is the name of the condition found in plants that are iron deficient. It is one of the most common micro-nutrient problems of ornamentals, shrubs, vines, small fruits, and trees. Appearing first on the young/new leaves. Leaves of affected plants are yellow, light green, or white with distinct green veins.


Do not spray in hot weather conditions

Iron can stain paths, concrete, paving, clothes and skin, so always wear old clothes, wash hands after use and be careful when applying near concrete and paths etc. Wash off immediately any lasting damage. Keep away from water sources such as ponds, pools etc.

Iron deficiency in many plants & lawns is an indication of high pH or alkaline soil. If yellowing persists or returns rapidly after treatment, soil pH should be checked and adjusted if necessary.

Follow application directions as excess liquid iron can lead to other problems, such as zinc and manganese deficiencies. While liquid iron provides immediate relief for plants & soil, it is not an adequate long-term solution for an iron deficiency. Keeping plants/Lawn in well-drained soil amended with sulphur to reduce the pH level can help iron in the soil become more available to plants.

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