Here it is:
Adding sugar, whether it comes from honey, molasses or pure sugar to your nutrient mix or to your soil doesn’t add sugar to your plant. The sugar molecule is too big to be absorbed by the plant through its roots by osmosis. In soil, the beneficial microbes might be able to convert it to something the plant can use, and it does have some things like iron, magnesium, calcium and potassium. It’s because of these nutrients, not so much the sugar content, why it can be useful and as I said the sugar in it can feed your soil microbes, but if it has a lot of sugar in it, it is more likely to increase the amount of pests (bugs and bad microbes) and cause more harm than good.