Bu's Best Biodynamic? Compost Tomato Tea is ready-to-brew! Each single-use tea bag will make up to 5 gallons of microbially-rich tea ready for use as a foliar feed, transplant shock reducer, root stimulant, soil drench or compost inoculant. Restore your soil's vitality and support your tomatoes' immune systems without synthetic chemicals. Specially formulated to bring out the best in your tomatoes with our proprietary recipe featuring worm castings, kelp and equisetum. Recommended use: once a month. Certified Biodynamic? by Demeter-USA.