Large-flowered bed dahlia pink-orange-redLarge, low flowers. The large flowered bed dahlia does not grow very tall. The large flowers create a colourful blanket in your flowerbed! Plant the tubers in the spring. The flowers bloom in the summer and autumn. Space the tubers out when planting. The distance between plants is three times the width of the tuber. Plant the tuber the depth of three times the tuber's height. The amount of sunlight doesn't matter for dahlias. Water the tuber