The Question and Answer section for Wordsworth’s Poetical Works is a great resource to ask questions, find answers, and discuss the novel.
I'm sorry, which of Longfellow's poems does your question relate to? I have not been able to locate a poem by Longfellow entitled "Early Spring".
Communing with nature gives a lift to a person's soul and imagination. Their body and spirit are revitalized.
Nature fills the spirit with beauty and life.