When I moved to Maine over 3 years ago, I was quickly put in my place when I tried to start my garden in April. In fact, my father-in-law laughed when I began sowing seeds indoors in early February. Little did I know that frost can show up as late as mid May. So I went down to the local feed store and chatted with some of the old timers there. I learned that most start their garden on June 1st.