Contraste dahlias can be grown both in pots and in the ground, but they may perform differently in each environment.
When grown in pots, Contraste dahlias require a well-draining soil mix and frequent watering to keep the soil moist. Pots also allow for easier control over the plant's growth, as they can be moved to areas with optimal sunlight and protection from wind or extreme temperatures. However, the limited space in pots can hinder the plant's ability to grow to its full potential.
On the other hand, when grown in the ground, Contraste dahlias can spread their roots more freely and receive a greater amount of nutrients and water from the soil. They may also be more resistant to extreme weather conditions. However, growing Contraste dahlias in the ground requires adequate preparation of the soil, including loosening the soil and adding organic matter.
Ultimately, the choice between growing Contraste dahlias in pots or in the ground depends on the available space, resources, and preferences of the gardener.