I have not seen any recommendations on glucose.
I am starting fall now, but since most of you are starting spring, I strongly suggest you try watering the foliage with glucose once every 1 or two weeks.
I put 1 big spoon in 1 liter of water (heat the glucose a bit to disolve it easily).
This is ONLY for junnipers as far as I know, though I water my pines as well when I am at it, but the big difference is on junnis.
Specially after a transplant, if you are lucky enough, you can even avoid juvenile needles using this technique.