Theoretically spring has sprung. The first day of spring dawned chilly, but temperatures got to 56 degrees before they began to fall again. I thought wistfully of this time of the year in 2016. Last year I went shopping and bought potted shrubs which I planted on March 22, along with a Lindera benzoin, spicebush. Spicebush swallowtail butterflies like to eat the foliage of Lindera Benzoin. I had a wonderful day last year working in the garden, cleaning…