Slingerland Potgrond is a specialist in potting soils, established in Zoeterwoude. We deliver high quality growing substrates for long term cultivation. The company is a market leader in substrates for the cultivation of orchids. Slingerland Potgrond has a strong innovative character. We continuously invest in high-tech production means and advanced methods for a constant, optimal quality of our substrate mixtures. We also continuously monitor the production process, from extraction of the raw materials to delivery of the finished product. Slingerland Potgrond is a member of the RHP foundation (‘Regeling Handelspotgronden’), a quality label. (The objective of the RHP foundation is to optimise the quality of peat products, raw materials, potting soil formulas, substrates, soil supply and soil improvement materials).. Moreover, we hold an ISO 9001 certificate for quality standards and production.   List substrates bestsellers: -  Substarte for anthurium in bags of 45 ltr -  Substarte for anthurium in bags of 45 ltr -  Substarte for phalaenopsis in bags of 45 ltr -  Substarte for phalaenopsis in big bales -  Substarte for dendrobium in bags of 45 ltr -  Substarte for dendrobium in big bales -  Substarte for cymbidium in bags of 45 ltr -  Substarte for cymbidium in big bales