In the dead of winter, the idea of planning a new little cut flower garden was a bright spot. A meager 4ft x 8ft garden bed was full of possibilities. Can we actually make dahlias grow and flourish? They have a reputation for being finicky. Should we start our zinnias from seeds inside? Where should I get unique varieties of the cosmos I want to grow? The possibilities are endless. In mid-March we started our seeds in a corner of the basement, complete with a seedling tray, grow light and heat mat. It all went well, and seedling deaths were kept to a minimum.  The preparation that goes along with…