Is it possible to feed nitrogen to plants via foliar feeding???
Not wanting to burn roots.
i have done it ,weak mix, plants were about three weeks?maybe four into flower,and it solved the yellowing,i did it early morning on outdoor plants,never had to try indoors but cant see why not ,just not to much water or nitrogen,but the sun over hear gets HOT,so i also did it on a day that was not going to be in the 40 celcius range,sorry may not be much help,but did work for me,and i usually never spray during flower stage but had to try something,i did one plant first left it for a couple of days seemed to be happy got the green back in new growth,but i would try one first,as i dont know what your temps are or in or outside.
fuck up one you will be sad fuck up all you will get fucking mad,