SUPERthrive SUPERthrive is the original vitamin solution and contains a highly concentrated mixture of vitamins and plant hormones, designed as a supplement to normal feeding. Highly effective plant growth and strength enhancer and can also be used as a stress reliever when re-potting plants. Superthrive can be used in any grow medium or system. For super healthy growth and as a plant ‘pick me up’ and stress reliever, Superthrive is the product. A top selling vitamin and hormone liquid concentrate, SUPERthrive really is a winner, top plant product the world over. Grow and Harvest thinks it does a great job. Give your cuttings and seedlings a boost with SUPERthrive! Related products SUPERthrive Feed rate – 1- 4 drops /Litre throughout the grow cycle.