As my life got busier each year, sometimes I waited until the very last minute to get her a bouquet, but I always managed. So the first time I heard about 1800flowers, I thought "Now THAT'S a good idea." The first time I called, I asked "Can I order in advance?" I think they owe me for that one.
So, if you're stuck, remember. There's no better gift that expresses how you really feel than getting Mom some flowers for Mothers Day. There are no mystifying buttons to figure out, and you don't even have to make reservations.