Bu?s Brew Biodynamic? Compost Tea Bags are 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 plants' immune systems without synthetic chemicals. For use with flowers, veggies, shrubs, trees or grasses. Recommended use: once a month. Certified Biodynamic? by Demeter-USA. Soil For Life.