Adding honey or molasses to plant water during veg or flowering stage, or spraying buds with sugar water before harvest are technique used by cannabis growers. Adding sugar during flowering does lead to bigger nugs by increasing microbial activity within grow mediums, such as soil, rockwool (seedlings) and coco coir.
Is Molasses Better Than Honey For Cannabis Plants?
Honey is better than molasses at boosting trichome and resin production in cannabis. Honey contains 278g of sugar per cup, and molasses contains 187g of sugar per cup. Sugar content is proven to be important with carbohydrate based nutrient supplements. Add 2 tbsp of honey per gallon every 2 weeks.