Valuable products can be made from waste streams from plants and flowers, such as flower paper or dyes. This is evident from the report 'Useful use of 'Corona' surplus floriculture and horticultural products', which was handed over on Friday 17 September 2021 to Meindert Stolk (deputy of South Holland, chairman of Greenport West-Holland), Albert Abee (alderman of Westland), Adri Bom (chairman of the Stichting Innovatie Glastuinbouw Nederland, SIGN) and Jolanda Heistek (program director of Greenport West-Holland). The handover took place in Honselersdijk.