What does Rough winds do shake the darling buds of May mean?

The phrase "Rough winds do shake the darling buds of May" comes from Shakespeare's Sonnet 18. It metaphorically suggests that the challenges and difficulties of life can disrupt the beauty and innocence of youth, symbolized by the "darling buds" of spring. The "rough winds" represent external forces that can threaten the fragile beginnings of life and love, highlighting the transient nature of beauty and youth. Overall, it emphasizes the vulnerability of new beginnings amidst life's inevitable hardships.