Smiley's on the right track CPW . Find a granular bloom fert, like a 4-8-8, add a couple tablespoons around the base of the plant and aerify with a probe of some type. A good aerifying will also help the plant breathe and dry out. If it doesn't rain for a few days, water in the fert when needed. This can be done every 2-3 weeks during flower. BTW... you can add liquid bloom boosters too, like Kool Bloom, Bloombastic, or whatever you use.