Dahlias come in a wide array of colors ranging from soft, delicate whites to vibrant shades of pinks and oranges. Along with coming in different colors, dahlias also come in many different styles and sizes. Some dahlias are as small as 2 inches, while some grow to be a massive 12 inches. The variety that dahlias offer, make them a popular pick among gardeners each year. Like the rest of the dahlias, white dahlias are an excellent addition to your home and garden.
Choose a well-drained area to plant the white dahlias. White dahlias require full sun for at least 8 hours per day along with the well-drained soil.
Insert a wooden stake into the ground where the white dahlias will be planted. As the dahlias grow, attaching them to the wooden stake with soft strips of fabric to provide proper growing support.
Water the dahlias daily to keep the soil moist. Continue this process until the dahlias reach 10 inches in height. Once the dahlias reach this height, they require approximately 1 inch of water per week. During dry spells, you may need to water more frequently to keep the dahlia from wilting.
Fertilize the dahlias with a water-soluble fertilizer at the beginning of each month throughout the spring and summer. You can purchase a water-soluble fertilizer at a garden specialty store.
Remove any dead blooms from the white dahlias during blooming season, by pinching them off with your fingers. This will allow the white dahlias to continue to bloom throughout the season.
Dig up the white dahlias after the first frost of fall, using a small garden shovel. Gently remove any dirt that is stuck to the tubers, by gently shaking the plant. Allow the tubers to dry for two days, or until they are dry to the touch.
Fill paper bags with peat moss, and place the white dahlia tubers into the bags with the roots facing upward. Place the paper bags containing the dahlias in a cool, dark location, such as a basement, that doesn't get below 45 degrees F in the winter.