Westland Houseplant Potting Mix 4L Added Seramis granules for water management Essential nutrients for healthy growth and also greener leaves Specialist blend Westland Houseplant Potting Mix is a specialist mix of wood fibre and perlite for airflow as well as drainage. Ideal to use for potting or re-potting most indoor plants. This free draining mix promotes healthier growth and greener leaves for an outstanding indoor garden. Contains unique Seramis granules for optimum water and nutrient availability.