Attractive and colorful seed packets are blooming in garden centers. The constant promise of seeds is that they will germinate and grow providing us with healthy foods, zesty herbs and colorful flowers. Some  companies like Burpee have been around for over 100 years. Others are newer. Stories about beginnings are always fascinating and today I have stories about three newer seed companies. When we lived in Maine in 1974-5 I learned about Johnny’s Selected Seeds when I was…