Mike,
The video of my Texas greenhouse was taken years ago before many of the overstory trees had grown in. Calling them "overstory" is not always describing the current height, sometimes I was using it in context to describe the natural growth pattern of certain species. The over story trees are now about 35 ft tall and shade out as much area around them as I will allow through pruning and yearly height and canopy maintenance that is necessary to grow a food forest in a greenhouse. I hope that disambiguates what you saw in that old video.
Best,
Foxxotron
