Put the titles of short works, such as (most) poems, short stories and articles in quotes and 'stand alone' works in italics.
Yes, if you are writing a paper about a poem, you should still put the author's name in quotation marks when referring to the poem. For example, "In 'The Road Not Taken' by Robert Frost, the speaker contemplates choices in life."
Titles of novels, plays, newspapers, albums, etc get underlined. Short stories, poems, song titles, articles, etc. go in quotes.
When typing the title of a poem in text, it is generally recommended to italicize it rather than underline it. This helps to distinguish the title from the rest of the text and adhere to formatting standards for written work.
A then when the darkness had drooed
If it is a long work, such as a novel or epic poem, yes. If it is a short work such a poem or episode no, you put it in quotations.
Nature is the beautiful handwriting of God
NO, that is not but if you copy the poem word for word or even take a verse of that poem that would be plagiarism. However, you should be careful about using long or very well known titles.
It could be a "found poem", which the literary equivalent of a collage. http://www.poets.org/viewmedia.php/prmMID/5780 It could also be a cento which according to dictionary.com is "a piece of writing, esp. a poem, composed wholly of quotations from the works of other authors." http://dictionary.reference.com/browse/cento
it's a quotation mark, usually used for dialogue, short story titles, poem titles and things like that
You must understand that a title generally has to mesh with the content of the poem itself so it all depends on what your poem is about.
if its a really long poem then you underline it but most of the time you put quotation marks
To Alexander Pope belongs the greatest number of quotations in the English language, all from his poems.