The rainwater is collected in 2 basins, so that there is enough water available year round. No spring water is used. The cultivation floors are connected to a closed system so water and fertilizer can be recirculated. An ebb and flow system is used linked to a closed system. Here 100% of the casting water is recirculated. This way, there is no run-off to the soil. The duration that the water is on floors in the ebb and flow system is optimally set, depending on the need (according to the seasons), plants and pot size.
The water used for cleaning floors, windows and pathways is also collected, filtered and recirculated. Even condensation water from the nursery is collected and reused.
In order to preserve nature, the grass and weeds along the ditch sides are mown and sprayed with non-harmful agents. When mowing the ditch edges, bird breeding sites are spared. No unnatural or harmful substances are discharged into the ditches.
Waste materials such as plastic and paper are collected separately within the company and disposed of as soon as possible. In short, everything is kept as clean and natural as possible. All this to preserve the environment.
Employees are particularly alert to the presence of diseases and pests in the plants. Samples are taken weekly to test the plants. If any pest is discovered, first, efforts are made to deal with the problem in a ecological way. If this is not possible, only a limited amount of plant protection products will be used.
The greenhouse is equipped with a modern climate system, set up for optimal use of the recovered heat. By means of screen installations, the heat (if necessary) is retained as long as possible. The climate can be regulated per department according to the needs of the plants in that particular area.
Energy is partly generated by a CHP (co-generation). Any excess energy generated is returned to the grid.
The working hours in the glasshouses follow the seasons, so that work can be done in natural light. There is no grow light present at Kwekerij Marginata B.V.