Dave Bonta's short poem captures a quiet moment of closeness. The speaker stands "hip to hip" with someone, and the poem suggests this is his wife, since the last line mentions her. Together they seem to be outdoors, and the shared experience of rain teaches him something. He says he has "increased my knowledge of rain," a funny, understated way of saying he has paid closer attention to it because he is not alone.
The second stanza widens the view to a garden in a field. He calls it "a composition," as if the planted rows and the weather together make a kind of artwork. That composition then draws him back to his wife, so the beauty he sees leads him toward her rather than away.
The mood is calm, affectionate, and gently humorous. Nothing dramatic happens. The poem finds love in small, physical closeness and in noticing the world together, and the title "Horticultural" nudges us to see the ordinary garden as something worth admiring.