An outer of 16 of brightly colored bags with 2 red dinnerplate dahlias. Dahlia tubers can be planted in the spring. Sometimes it is necessary to support the flower stems. Dahlias are sensitive to frost, so be careful with late night frosts. Dig a spacious planting hole, loosen the soil and fill the planting hole with good potting soil. Carefully place the tubers in the planting hole and cover with 3-5 cm of soil. The planting distance of the tubers is 30-60 cm. Water the tubers immediately after planting. dahlias bloom most profusely in full sun. Store the tubers in a frost-free place after flowering and you will enjoy them for years to come. Dahlias combine well with perennials and other dahlia species. The flowers are real eye-catchers in the border.