Adding boron for blooms

Question

Last year, from this site, I received information to try boron for a lilac that had never bloomed since I had put it in 8 yrs ago. Well I had a bloom this spring. Not fantastic but it did bloom. I want to add boron again but I do not remember what I did or where I got the boron. Can someone steer me in the right direction? I did add it to the soil but that is all I can remember.

Answer 1

Here is a link for you.

https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/boron-on-plants.htm