Relevant for which reason sunflowers were disallowed?
No and unknown Did the rules specifically mention sunflowers?
Yes or rather, all plants with some specific properties? properties that apply to sunflowers? but not to corn?
Is the idea that the home owners will dislike corn even more than sunflowers?
Yes so then might allow sunflowers just to avoid that someone plants corn there?
Yes********SPOILER********
Simon plants sunflowers in front of his house, but his HOA makes him remove them. He then asks his lawyer to review the HOA contract to see if there's any way to keep the sunflowers. The lawyer finds that the contract includes a long list of plants that are not allowed (including sunflowers) and, in a throwaway comment, points out that corn is allowed. This gives Simon an idea: He replaces the sunflowers with unsightly corn stalks, and once the HOA notices how ugly they look, they allow him to plant his sunflowers again.Well done, Sunflower, err, Sundowner, and thanks for playing everyone!