You add 1 tablespoons of unsulphured blackstrap molasses per gallon of water during the last 3 weeks of flowering. (Some use it from day 1 of flowering). How are you growing it?
Why only flowering? It adds good micronutes for veg as well.
well that depends on what you are feeding your plants really. the only reason to use the molasses imo is to get that good extra swell in your buds. i have heard some say it adds 10-20% in weight. i doubt 20% but it does add weight.
btw if you use that stuff to much your soil gets all gummy and then bugs become a concern.
It swells them up because it provides the micronutes the plant wants.
For micro nutes I use Earth Juice Microblast.
Are you in soil or hydro? That's mainly for hydro, but I guess a lil wouldn't hurt in soil. Just a waste of money if you ask me, molasses would do plenty good enough.