Our little 5-in-1 dwarf plum tree is always the first to bloom, and inevitably it’s always the first victim of frost. I believe we planted that tree about 10 years ago and have never got fruit from it. One year we carefully covered it every night, and by beginning of May there was fruit set on it. We thought we were going to get plums, but around the middle of May we had a very hard frost that killed all our fruit and several roses. I don’t know how people who farmed this property early last century, before “global warming”, survived.