First one is a Dahlia, I think. Your picture is pretty blurry. If it is, it need some fertilizer and lots of water.
Second and third are Cranesbill Geraniums.
Could you please fill in your personal profile with your location (city/state/country)? Then it will appear in the upper right corner of all your posts (see mine?) It really helps to know approximately where you are both with identifying plants and answering other questions.
