Pampered and protected in winter, lost in spring!
Whyizzit, after I've let down my guard on a new plant
I'm babying through winter, a whimpy spring storm kills
Many plants are most vulnerable to cold in late winter and early
spring. What doesn't phase it during winter's coldest days can kill
it in March.
Plants become gradually hardened off during fall and early
winter. By midwinter they are unperturbed by cold, even sub-zero
temperatures up to their species' hardiness limit. Once a plant
begins to soften its tissues as days lengthen, however, it won't
receive any cues or time to harden off if a late winter Arctic
blast comes through.