The fertilizer you have used on your flowering plants and shrubs will not harm your plants, it is still beneficial.  A good overall general purpose fertilizer has a composition of 5-10-5 (5% Nitrogen; 10% Phosphorous; 5% Potassium) You will find this ratio on the package directions of any fertilizer product you buy.  You can apply a general purpose fertilizer, either liquid or granular, every 7-14 days according to package directions throughout the growing season.