What can I possibly say? This morning in the oak collection (yes, and everywhere else in the Arnold Arboretum) was magnificent. The snow still clung to the north faces of the trunks, and the branches had yet to lose their white outlines. I headed to the soaring cathedral-like grouping of oaks on Bussey Hill to revisit a spot where I had photographed the canopy of a swamp white oak (Quercus bicolor, 22887*G) against a perfect blue sky on January 21. Today, the hazy cloud cover set off the darkened (by the moisture) branches and their outlines of snow – and reminded me that no two days are ever alike in the living collections, even in the very same spot with the very same tree.