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Optima Leaf-Fe+ is a liquid foliar fertiliser based on iron that has been 100% complexed with hepta gluconic acid (HGA). Iron deficiency is often common at high pH levels in the soil. Treating the soil with iron is not effective in this case. There is often an abundance of iron, but the uptake of iron is prevented by the high pH. In this case, the only effective treatment is with foliar nutrients. Iron plays a major role in chlorophyll production.

Optima Leaf+ -Range

Optima Leaf-Fe+ is part of the Optima Leaf range, a line of foliar fertilisers that are efficiently absorbed by the crop. The '+' stands for the presence of supplement trace elements. These prevent one-sided fertilisation and demonstrably increase the effectiveness of the product.

Functions of iron

  • Essential for chlorophyll production.
  • Makes the leaf darker (more chlorophyll) with more capacity to absorb solar energy.

Possible causes of iron deficiency in the plant

  • Soils with a low organic matter content.
  • Soils with a high pH fix iron.
  • Antagonism caused by increased phosphate, calcium, copper, manganese and zinc content in the soil.
  • Excessive use of phosphate or high phosphate levels in the soil.
  • Cold, wet weather conditions.


  • Delivers iron in an organically complexed form.
  • Ensures efficient uptake and translocation of iron.
  • Product approved for organic agriculture and horticulture in compliance with regulations EC 2018-848 & EC 2021-1165.

Iron (Fe) water soluble

54 g/L

Manganese (Mn) water soluble1,8 g/L
Boron (B) water soluble0.38 g/L
Zinc (Zn) water soluble0.31 g/L
Copper (Cu) water soluble0.16 g/L
Molybdenum (Mo) water soluble0.13 g/L

Complexed Fe, Mn, Zn, Cu


Stability range pH

3,0 - 12,0

Specific gravity

1.25 kg/L

pH product

4.5 - 5.5


Brown liquid



Verkrijgbaar in verpakkingen van 17,5 liter.

EC Fertiliser

Application rates

Foliar application (maximum concentration 1:100, unless stated otherwise)

Arable crops:
1.5 litres per hectare.
2-5 per year, during leaf development.

Tree nursery, vineyards, (small) fruits:
1.5 litres per hectare.
4-6 per year, during leaf development.

Lawn and pasture:
1.5 litres per hectare.
1-2 per year, during leaf development.

Forestry and plant nursery:
1.5 litres per hectare.
4-6 per year, during leaf development.

Ornamental crops:
1.5 litres per hectare.
4-6 per year, during leaf development.

Vegetables and strawberries:
1.5 litres per hectare.
2-6 per year, during leaf development.

Fertigation application:
Standard dosage all crops:
2.0 litres per hectare, every 2 weeks, as required.

Instructions for use
  • Shake or stir well before use.
  • Store in a cool dry place away from direct sunlight.
  • This product has been tested and can be stored safely at temperatures from 5°C to 25°C. Crystallisation and/or sedimentation may occur below 5°C.
  • Apply under suitable spraying conditions (e.g. temperature, humidity, wind speed). Do not treat if the temperature is >25°C or if it might rise to >25°C in the hours after application. Preferably perform the treatment at the end of the day. Do not apply product close to harvesting.
  • Miscibility and/or efficacy cannot be guaranteed when combined with any other agent. Before mixing, it is recommended to perform a test on a small scale.
  • Do not mix with other products in pure, undiluted form. Product is stable at pH 3.0 - 12.0. In combination with products containing phosphate, always test for combinability first..
  • We recommend carrying out a trial application on a small area first, before applying to the entire plot.
  • The shelf life of the product is stated on the label. As long as the guidelines for storage are followed the expiry date (BB) on the label is guaranteed.
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210129 JP Optima Leaf Fe jcn


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