Answer:
The speaker in this poem is thinking about how Monadnock, a dominant and splendid hill, appears in early spring. The speaker describes how the hill still holds onto winter in some areas, but the trees are flushed with expectancy and cast a cloud of crimson in anticipation of spring. The poem also suggests that each year brings something new and important to Monadnock and that the hill is a symbol of greater, unseen majesty. Therefore, the answer is: How Monadnock changes with the seasons.