99 years of experience 180.000 products in more than 30 countries


A shading duration of at least 2 months.

Own brand

We are the owner of Witvast, a powdered shading agent that protects plants from excessive sunlight and heat. Witvast is available worldwide in bags of 25 kg.

Private label

Our shading agents can also be supplied in specific compositions and designs that fit in with your brand and target group. Make an appointment for more information.

Accredited distributors

Witvast is verkrijgbaar bij onze distributeurs in de volgende landen:

  • The Netherlands: Mertens
  • Canada: exclusively through Houweling-Dutch Plantin
  • Other countries: through Houweling Group

If you are interested in becoming a distributor, please contact us.

Want to know more about Witvast?
Our specialists are happy to help you.