Rose Shock Wave Petunia- The rose-pink flowers are 1-1/2 to 2 inches across, about 1/2 the size of regular Waves. Fast-to-fill, mounding, 8 to 10 inch tall plants are less day-length sensitive than other Wave petunias so theyre earliest to bloom. They tirelessly produce incredible numbers of blossoms that recover quickly from rain and overhead watering. Their strongly branched, trailing habit adapts virtually everywhere – pots, hanging baskets and mixed containers. Pelleted seed.