How to Grow Dahlia Plant Outdoors

Dahlias are one of the most popular flowering plants for gardens and landscapes. With their vibrant colors and variety of shapes and sizes, dahlias can add a burst of beauty to any garden. However, growing dahlias can be a bit tricky for some gardeners. In this article, we’ll discuss the steps you need to take to grow dahlia plants outdoors successfully.

Choosing the Right Location

The first thing you need to consider when growing dahlias is the location. Dahlias require full sunlight, which means they need at least six hours of direct sunlight each day. Choose a location in your garden that receives plenty of sunlight and has well-draining soil.

Preparing the Soil

Dahlias prefer well-draining soil that is rich in organic matter. Before planting your dahlias, you should prepare the soil by adding compost or other organic matter. This will help improve the soil’s texture and fertility, making it easier for your dahlias to grow.

Planting Dahlias

Once you’ve chosen the right location and prepared the soil, it’s time to plant your dahlias. Here are the steps you need to follow:

Dig a hole that is twice as wide as the dahlia tuber.
Place the tuber in the hole with the eye (the pointy end) facing up.
Cover the tuber with soil, leaving about an inch of soil above the tuber.
Water thoroughly.

Watering and Fertilizing Dahlias

Dahlias require regular watering throughout the growing season. Water deeply once a week or more often during hot, dry weather. Be sure to water at the base of the plant and avoid getting water on the leaves or flowers, as this can lead to disease.

Fertilizing is also important for dahlia plants. You can use a balanced fertilizer, such as 10-10-10, every four to six weeks during the growing season.

Staking and Supporting Dahlias

Dahlias can grow quite tall, and their large flowers can become heavy, causing the stems to bend or break. To prevent this, it’s important to stake and support your dahlias.

You can use bamboo stakes or other supports to keep the plants upright. Place the stakes in the ground near the plant, and tie the stems to the stakes using soft ties or twine. This will help support the weight of the flowers and prevent the stems from bending or breaking.

Deadheading Dahlias

Deadheading is the process of removing spent flowers from the plant. This helps promote new growth and encourages the plant to produce more blooms. To deadhead your dahlias, simply remove the spent flower by cutting it off just above a leaf node.

FAQ

When should I plant my dahlias?

Dahlias should be planted after the last frost date in your area, usually in late spring or early summer.

How often should I water my dahlias?

Dahlias require regular watering throughout the growing season. Water deeply once a week or more often during hot, dry weather.

Can dahlias grow in pots?

Yes, dahlias can be grown in pots as long as they have enough room for their roots to grow and are watered regularly.

How do I store dahlia tubers over winter?

In colder climates, dahlia tubers should be dug up and stored over winter. After digging up the tubers, let them dry out for a few days, then store them in a cool, dark place until spring.

In conclusion, growing dahlia plants outdoors is not difficult if you follow these simple steps. Choose a sunny location with well-draining soil, prepare the soil with organic matter, plant the tubers, water and fertilize regularly, stake and support the plants, and deadhead spent flowers. With a little care and attention, your dahlias will bloom beautifully all summer long.