Mycostop and Endomycorrhizae Innoculants Gardeners looking for an effective root drench at the time of planting seedlings may be interested in Mycostop, a Streptomyces griseoviridis strain K61. This product is labeled to treat 3-4 common diseases and lists 1-2 more than its competitor, Actinovate, which is a Streptomyces Lydicus. When