McGerm wrote in

oups.com:

The video was part of a Jerry Baker's Master Gardener
series... It was presented as something you just do as
regular maintenance; as a Best Practice in landscape care.
His premise appears to be that stopping diseases and insect
problems before they start by using safe non-toxic
preventative care, is better than reactively treating once
a problem appears.

Jerry Baker is a garden quack. if you really like your yard &
garden, please do not follow his silly formulas & poor advice.
lee