Buy the 2015 Old Farmer's Almanac!
Maybe you have had someMaybe you have had some fluctuating weather which has caused the buds to not open yet. If the buds look healthy they should open when the weather turns warmer. It's important to keep the potatoes well watered during the period when they are flowering and immediately following the flowering stage.

2015 Garden Calendar2015 Weather Watcher's Calendar2015 Recipes Calendar2015 Engagement Calendar 2015 Everyday Calendar2015 Country CalendarNew Year Cross StitchLobster Rope Doormats