mmmmm........ Interesting point, but I'm not sure it makes a difference. Most planting mediums have to be sterile for best results, and sterilsation involves killing the micro herd, as you put it. I understand that outside we rely on bacteria to breakdown dead plant material, but don't think that has any part to play in potted plants when fed .marie06 wrote:I've been reading up on this, and it seems that it's fine to use on the foliage but not on the roots as it will kill the micro herd in the soil.
Perhaps someone with botanic expertise can add to this.