Emily and Susan's yard is landscaped with only native plants.
From the hallway is the adverb phrase. This modifies "coming" which is the verb
The words from the poem which establish the setting and <span>mood of the poem best are: </span>knight-at-arms, haggard, steed. The words give us hints that the poem described the surroundings related to horseback riders and a sort of battlefield where knights were present, and the adjective "haggard" points out its mood.