To ensure optimal soil moisture and good growth, we recommend using Boum potting soil. The Boum substrate has been optimized to ensure that water is drawn up from the Boum Planter's water reservoir. A special mulch layer prevents the water from evaporating, so that flowers, vegetables and spices are optimally supplied with a minimum of water. The soil is biologically pre-fertilized and thus supplies the plants with nutrients for the first 5 weeks.
