If you use any plant nutrient correctly, it is NOT toxic.
I have probably heard 1000 people say something along the lines of, “boron is toxic”. The next page shows you how to use boron safely and details why it is so essential in plants.
Boron is only called a micronutrient because plants don’t need a lot of it.
However, I would consider it a MAJOR plant nutrient because without it,
you can’t hit the yield or profit goals you hope to achieve!