CANNA Terra Professional is a nitrogen-rich soil mix for plant cultivation. Your plants will grow best in nitrogen-rich soil. CANNA Terra Professional soil mixes are not comparable to the mixes from a conventional garden center. Our product contains a mixture of sphagnum bog peat, compost, vermicompost, perlite and a special natural plant accelerator made from a blend of organic ingredients. Our soil mix is the product of choice for indoor and outdoor cultivation.