If you are in Tuscany in the summer, you can't miss sunflower fields. You'll see them driving from Florence to Sienna or anywhere you go.
Sunflowers are symbolic for the Maremma region. You can spot huge picturesque fields when driving along the coast—to Pian d'Alma or Castiglione della Pescaia. The bloom starts in late June, and suddenly everything turns yellow. It continues well into August.