What are the initial images in the poem "Love Should Grow Up Like a Wild Iris in the Fields"?

Strange as it may seem, there will be some readers who
have not seen a domestically grown iris, let alone a wild iris. Hopefully a quick
Internet search can give you the general description of an iris. In the first seven
lines the images are drawn from the natural areas out of which a wild iris should grow.
Love is like the wild iris, and should grow naturally, spontaneously, out of nature and
the place in which it finds itself. In the next eight lines the scene of imagery shifts
to a totally contrasting location in the kitchen, where meals and a table are the major
objects, and where the mother is “not quite / hysterical.” Both sections of imagery end
with the comparable phrases “but does not,” and “but never
does.”