Misilla from Learn to Grow shares amazing results from her experiment growing tomatoes with and without VermisTerra earthworm casting tea over 4-5 weeks. She started with smaller plants, gave them tea, and they caught up with the bigger plants and outgrew them. Misilla waters them with VermisTerra tea once a week. Both sets received the same potting mix. The leaves of the ones that received tea were taller and bushier.