Everyone Thinks You Can Plant as Soon as Frost's Gone. Why 60°F Soil Really Matters.
https://noon-wiki.win/index.php/When_Boxwoods_Grow_Into_the_Walkway:_How_to_Fix_a_4-Foot_Wide_Hedge_by_March_or_April
When Backyard Gardeners Learn the Hard Way: Linda's Early Spring Surprise Linda has been gardening for five years