I am currently working for an enterprise specialized in ornamentals. I am looking for some ways to protect these plants outside. We considered adding sugars to their nutrition or some minerals, and also using a bacteria strain (which one doesn't come to my mind at the moment), but it doesn't seem to work for every variety. Your advice or data would be much welcome. It can even include strategies inherent to enhancing the genetic structure by making hybrids in the next generation. It's just an example, I'm open to any advice... Thanks :)