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Optima Leaf-Zn+ is a liquid foliar fertiliser based on zinc that has been 100% complexed with hepta gluconic acid (HGA).

Zinc is important for the production of auxins - plant hormones which govern leaf size. Leaf size determines the efficiency of photosynthesis so, in this context, zinc is one of the most important trace elements.

Optima Leaf+ -Range

Optima Leaf-Zn+ 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 zinc

  • An essential element for many plant processes.
  • Important element for root growth.
  • Plays an important role in the formation and activity of chlorophyll.

Possible causes of zinc deficiency in the plant

  • Soils with a high pH.
  • Light, sandy soils.
  • High phosphate and calcium contents inhibit zinc availability.


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

Zinc (Zn) water soluble

69 g/L

Iron (Fe) water soluble3.8 g/L
Manganese (Mn) water soluble1.8 g/L
Boron (B) water soluble0.38 g/L
Copper (Cu) water soluble0.17 g/L
Molydenum (Mo) water soluble0.13 g/L

Complexed Zn, Cu, Fe, Mn

100 %

Stability range pH

3.0 - 12.0

Specific gravity

1,28 kg/L

pH product

5.5 – 6.5


Brown liquid



Available in 17.5 litre containers.

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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210203 JP Optima Leaf Znjcn Soiltech


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