Dahlia Purple Gem has beautiful red-purple-coloured flowers with a diameter of about 12 cm and a height of 90 cm. They bloom in the summer garden from July. Cactus dahlias are eye-catching and unusual, because the petals are long and curled, giving them a striking appearance. Plant the tubers in a sunny spot in the garden from mid-May. The soil must be nutritious, airy and well-draining. Do not allow the soil to dry out during the growing season.Dahlias are native to Mexico and are very popular. They provide beautiful cut flowers. For a long-lasting bloom, remove dead flowers to promote new flowers growth. Because Dahlias are not hardy in our climate, harvest the tubers in the first week of December and store them in a frost-free environment. Tip: plant them in attractive pots on the patio.Vegetable Garden: Did you know that dahlia flowers are edible? Sprinkle the leaves over a salad for a festive effect.