Studiedag Horti-BlueC webinar 3: Spent growing media for direct reuse or as a feedstock for biochar and compost

Horti-BlueC webinar3

From waste to resource: Interreg 2 Seas Horti-BlueC is organising 4 webinars on the valorisation of 5 local byproducts into building blocks for more sustainable growing media in horticulture.

How feasible are those valorisation chains, both technically, economically and logistically? Which processing or treatment is necessary to convert the waste streams into valuable resources for replacing peat, coir and mineral wool? Do these building blocks truly contribute to effective new growing media blends for strawberry and tomato plants, with reduced fertilizer and chemical crop protection product use?

These questions will be addressed in the four webinars. The first three will take place this Spring and the fourth webinar is planned for Fall 2021. Check the calendar for the announcement and registration link of the other Horti-BlueC webinars.

Horti-BlueC webinar 3: June 20th 14:00-15:30 CEST (13:00-14:30 BST)

In this third webinar you will learn more about recycling of spent growing media. Spent growing media can be directly reused or can be processed into biochar or compost.

Partners Horti-BlueC
Partners Horti-BlueC

Website Horti-BlueC for more information and updates: Horti-BlueC (

Interreg 2 Seas Mers Zeeën - Horti-BlueC

This webinar is open to all interested parties. Register now for free! Deadline for registration is 4th of June.

Download presentaties

Download documenten


Introduction to the Valorisation Chain
Direct reuse of spent growing media: technical, cost related and sustainability aspects (Lucas Shuttleworth, NIAB)
Processing of spent growing media into biochar (Rian Visser, ECN>TNO)
Biochar, compost and value for reuse (Bart Vandecasteele, ILVO)
Optimisation of compost for use in growing media (Bart Vandecasteele, ILVO)
Legislative framework
Panel discussion and Q&A (Chair: Cressida Bowyer, University of Portsmouth)
Wrap up: showcase website/tools and final announcements