what direction does your front yard face? (N,S,E or W) and how much sun does it get? Sun all day, mostly in the morning or afternoon?
Without knowing these things, I can tell you that one no fail option, as long as you get a reasonable amount of sun, is knock-out roses. they come in several color options, and are really no fail. you’ll have flowers from spring to frost, and you don’t need any special pruning skills – just trim them back if they get too big or sprawling. Another great one for this area is nandina, also called heavenly bamboo. the foliage is beautifully colored, and they get pretty berries in the winter. both of these are more shrubby than pretty flowery – need more info on the site for flower recs.