As a rule, you should fertilize at least three times a year; spring, summer and early fall.
During winter, a ceiling fan can move heat trapped near the ceiling back into the living area. This is especially valuable in rooms with high or vaulted ceilings. Remember to run your ceiling fan counter-clockwise in the summer and clockwise in the winter.
If you will be working in close quarters attaching new molding to walls or ceilings with finishing nails, first check out your hammer handle. Inevitably the handle end will hit the adjacent surface in spots. Either use a new hammer, clean up the handle of an older hammer, or mask the end of the handle with masking tape, especially if the handle has an older covering of black rubberized material. Doing this before you start can save you time that otherwise would be spent cleaning up or repainting over the scuff marks.