Stanzas do not have to repeat but sometimes they do depending on the author. Repetition has been one of the bases for many poetic forms. This can heighten the emotional impact of a piece. <span> A sound, syllable, word, phrase, line, stanza, or metrical pattern can be repeated. Hope this answers your question.</span>
The answer is that there is something artificial about these activities.
"How to plant" is the indirect object because it's referring to the main idea without affecting the action.
