Each diviner muts develop their own code - one that works for and resonates with you. In your divination process, what you were thinking about just before something in Nature catches your eye can be clarified by your interpretation of that event. Let's say you had been wondering if you should quit your job and do something new. The butterfly on the daisy reminds me of it's connection with Air and the mental world. She loves me, she loves me not.
Love seems to be a factor worth thinking about here.
Plants are usefull allies when working with daysigns as they have medical and magical connections that can be applied to your daysign walk. Maple is sweet, Mountain Ash, or Rowen, is protection, dock is a remedy to getting stung by nettles. Unlike the Tarot, where you really should know the individual meanings of all seventy-six cards before you begin to read for others, with plants, start with the ones you already know. They are the ones that will stick out anyway because you know their names. Make associations with each.