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La Blanche

La Blanche has been the most used sustainable shading agent in the world for over 90 years! It’s made with natural ingredients and provides a reliable protective layer. La Blanche is easy to use and to apply on glass, plastic and polystyrene sheets.

A screen duration of at least 4 months

  • Protection against sunlight and heat
  • Prolonged shielding and screen duration
  • Without environmentally harmful substances


Many crops cannot withstand too high temperatures or too much sunlight. La Blanche reflects the light and thus improves the climate in the greenhouse. La Blanche offers a durable protective layer and is easy to apply on glass, foil and polygonal sheets. It has therefore been the most used shading agent in the world for over 90 years! The standard dosage is 25 kilos of shading agent with 100 liters of water. This gives a solution of 115 litres: sufficient to spray 500 to 700 m2 of greenhouse cover.

Screening and Screen Duration

The screen duration of La Blanche is at least four months. By adding more or less water to the mixing prescription, you can determine the desired screening and screening duration yourself. Final screen time and coverage will depend on dilution and weather conditions.

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    Related products

    Hortus supplies all the necessities for growing your crops, such as fertilizers, plant correction agents, machines, technical installations and of course natural resources.

    View our full product range

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