My Mom was the one that discovered it a few years ago, she always has the best looking daylilies, roses, potted plants, pretty much anything she grows and I always comment how good everything looks. She mentioned what she's been adding, a bit of it to planting holes and also as mulch. I tried one bag at first, top dressed a few roses and potted plants and I could really tell the difference. Now I wait until the local nursery has a sale, buy 3 get one free, and I stock up.