https://www.youtube.com/watch?v=QEdUTwYg4N0Curtis Stone's videos are full of information, trial and error, success and failures.
A dozen or more visit his operation and he visits other growers and how they go about it.
And how he deals with the sunflower 'helmet heads' in another vid.
Air circulation and cleaning/sterilizing methods to avoid crop failures...
https://www.youtube.com/watch?v=aTClL8qZjKM
good one