Canna Terra Professional Plus Soil Mix 50 Litre Bag CANNA Terra Professional Plus is composed of airy peat moss and types of tree bark that have an antiseptic action. They promote exceptional root development and the formation of thicker stems. Also, faster metabolism combined with low sickness rates ensure an increased production. The medium is pH-adjusted for long-term control with a lime charge large enough to last an entire cycle. It has a mineral-nutrient starter charge that adjusts the initial level of nutrients up to a good beginning charge, correcting the ratios to work perfectly with CANNA TERRA nutrients. The special structure provides optimum amounts of air and water in the medium. CANNA Terra Professional Plus contains trace elements and chelates, which protect the plants during growth