Supertunia Vista BubblegumSupertunia Vista Bubblegum A trailing annual petunia characterized by its soft pink blooms and vigorous habit. Water Requirements: Moderate. Keep the soil consistently moist, but allow the top inch or so to dry between waterings. Soil: Well draining, fertile potting mix or garden soil. Growth Rate: Fast; spreads quickly in favorable conditions. Bloom Time: Late spring through fall; continuous flowering. Temperature: Warm season; sensitive to frost.