Finest Gold = What to do?

Ive got this one that looks like it has a gold tint. The plant is about 6ft tall. It is not topped, because someone told me you get a bigger yield if you grow it regular. Shes really tall and has one bud on the top ft of her. Is there something I can give her to bulk it up before its to late?

blackstrap molasses like 1 or two tablespoons per gallon of water and some phosporus....