Dahlias (Dahlia spp.), the colorful, showy stars of many summer gardens, are actually tender perennials. They grow back every year, but not in cold climates where winter temperatures drop below 20 degrees Fahrenheit (-6 C.).
How Long Do Dahlias Last?
The answer to how long do dahlias last depends on whether you’re talking about their life as a plant or their cut flowers. In mild winter climates, dahlias will come back year after year. But in cold climates, dahlias are treated as annuals. That’s because they don’t survive the frigid temperatures and need to be dug out and stored over the winter.
If you live in a climate where dahlias aren’t hardy and you want to try to get them through the winter, dig them up before frost hits and hang them upside-down in a cool, dry place like a garage or basement. Cut off the foliage when it dies and store the tubers until spring. When warm weather arrives again, replant your dahlia tubers outside for another season of blooms
Dahlias are perennials, and they can be planted from seed or from tubers. Plant them horizontally and cover with soil. Taller varieties should be spaced about two feet apart. Dig them up when the ground freezes. When you dig them up, make sure that you do not cut the flower stem below the point where it joins the main stem. Deep freezes may kill the plants.
Before planting dahlias, check the soil for proper moisture and pH. They grow best in moist, rich soil, with good drainage. If the soil is heavy, amend it with compost or aged manure. Add organic fertilizer at planting time. You can use an organic fertilizer with an N-P-K ratio of 5-10-15, or any vegetable fertilizer. For best results, plant the tubers at least 3 inches deeper than they need to be.
As with all perennials, dahlias can last in the garden for several seasons. If you plan to plant them in the spring or early summer, it is best to start the tubers indoors 4-6 weeks before the last frost date. You should use a pot with a diameter of 12 to 16 inches, and cover them with two inches of soil. Once they are established, you can transplant them outdoors in your garden. Just make sure to plant them in the full sun so that they receive at least six hours of sunlight every day.
If you decide to plant dahlias in your garden, be sure to plant them in the summer. These flowers will bloom from late June through early September. If you want to enjoy the flowers throughout the summer, you can plant them in the summer as well. You can even cut them and keep them in a vase! Then you can enjoy the beauty of a beautiful flower! And don’t forget to pick up a few for your home decor or for cuttings.
When planting dahlias, make sure that you are ready for the long season. During the spring and summer months, the plants should be in full sun. However, in colder weather, the blooming period will end early. If you plan on planting them in the winter, they are best in sunny locations that are protected from cold weather. You should also consider the soil type for the dahlias.
If you’d like to enjoy the beauty of dahlias all year round, you should start the seeds indoors at least four to six weeks before the last frost date in your area. Place the tubers upright, with their stems up, in a 12-inch diameter pot. Then, wait for the blooms to open before watering them. This will ensure that they are fully open before being cut.
When to Plant Your Dahlias: They need a warm and sunny location. The soil should be well-draining and should be free of weeds. The soil should be moist, but not too wet. If the soil is dry, they will not grow. If the soil is moist, the dahlia tubers need to be kept in a cool place.
Dahlias can reach a height of 20cm, and are heavy feeders. Apply a low-nitrogen fertilizer to the soil at least a month after planting. In hotter climates, you can add organic fertilizer at the same time. It should be a mixture of 5-10-15 N-P-K. It should also be dark, as dahlias need cool temperatures to survive.
The soil you choose for your garden should have good drainage and be well-drained. If you have clay soil, it can be difficult to grow dahlias. You should make raised beds or amend the soil if you want them to grow in that kind of soil. A moist soil will prevent the plants from flowering. If you want to see the flowers, you should add a sprinkling of sand.