A Premium-Grade, pH Adjusted Soil Mix – Brings the Best Out of Canna Terra Nutrients Canna Terra Professional Plus is a prestige soil made with the highest quality peat and nutrients. It has a superb airy structure and delivers exceptionally good results. Virtually all soil products encourage beneficial microbial activity in the root-zone. This increases yield and root-health. For an extra kick, try Ecothrive Charge too! How Canna Terra Professional Plus Works Soil-mixes provide the most natural environment for plants to grow in. Canna have created their Terra Professional Plus to be the ultimate choice for those who love to grow in soil. Canna Terra Professional Plus contains top-quality peat, dolomite lime (for pH stabilising) and nutrients all blended into an airy mix with good water retention and drainage that your plants will thrive in. Canna Terra Professional Plus contains plenty of food for about 2 weeks of vigorous growth.