The current video, as you can see for yourself, is about producing a healthy garden with zero blight or mildew on squash and other plants that tend to get it late season (or early if unlucky) This video is shot in Bellingham WA, and they have a lot to great things
permaculture going on over there. The climate is pretty good if you can stand some rain in the winters, but the gardens provide a feast otherwise. In this video, the guy interviewed talks about how his garden is mulched with the preexisting crop and this provide not only nutrients, but
water holding capacity that keeps his garden moist and healthy through dry summer periods.