Frost splitting on a landscape tree. Frost splitting normally occurs on the southwest side of young susceptible trees. Frost splitting may not cause death of a tree, but can create a portal for secondary (opportunistic) pathogens to enter and infect the tree.
Maple tree with a healed winter injury scar. Arrow shows the healed scar.
Spruce with winter desiccation symptoms. Evergreens, as well as deciduous trees, transpire throughout the winter and without adequate water can encounter drought conditions. Needles will brown commonly on the southwest side of the tree.