Double Cascade Blue Double Petunia

Double Cascade Blue is a blue, double grandiflora petunia with large ruffled blooms and a branching, mounded upright habit. PanAmerican Seed lists 10–15-inch height, 10–12-inch width, sun exposure, spring-through-late-summer flowering, and use in larger containers, mixed combinations, and beds ([Double Cascade Blue plant details](https://www.panamseed.com/Products/048702631000616/double-petunia-double-cascade-blue/)). ## Planting and placement Set the plant in full sun and moist, well-drained soil. Water deeply when the root zone starts to dry, while allowing excess water to drain freely; the [University of Florida IFAS petunia guide](https://gardeningsolutions.ifas.ufl.edu/plants/ornamentals/petunias/) notes that petunias perform best in full sun and moist, well-drained soil. The double flowers make this selection useful as a focal container or in a sunny bed. ## Seasonal display The breeder lists spring, late spring, summer, and late-summer bloom seasons. Protect the plant from frost and grow it as seasonal annual color in cold-winter areas. ## Maintenance Pinch young growth if extra branching is wanted. Deadhead spent double blooms to keep the plant tidy and encourage continued flowering; check pots regularly because they can dry faster than garden soil.