What is the conflict in "Goodbye, and Keep Cold" by Robert Frost?

To me, the conflict in this poem is an external conflict. 
It is a conflict between man and nature.  At times, I think that the orchard also
represents man rather than nature.  This is because the orchard is a thing that is made
by people.

So, in this poem, the speaker and the orchard
are struggling against the forces of nature.  They have to contend with animals and they
have to contend with the temperature and things like
that.

So the major conflict is whether the speaker and his
orchard can defeat the forces of nature.