Anyone who has ever visited the colourful fields in the Dutch Bollenstreek knows just how impressive a dahlia in bloom can be. To ensure these magnificent summer bloomers reach their full potential in your own garden, choosing the right location is essential.

Why sun is vital for your dahlias

Dahlias originally hail from the sunny highlands of Mexico. This means they are true sun worshippers. A spot where they receive at least six to eight hours of direct sunlight per day is ideal. The more sun they get, the stronger the stems will be and the more abundant the flowering. A shady spot often results in long, weak shoots and significantly fewer flowers.

The importance of soil quality and drainage

In addition to light, the condition of the soil plays a major role in the health of the tubers. Dahlias hate getting wet feet. Therefore, the soil should be well-draining and rich in nutrients. If you have heavy clay soil, you can improve it with some sand or compost to allow excess rainwater to drain away easily. Good drainage prevents the tubers from rotting in the ground, especially after a heavy summer rain.

Wind protection and stability for large varieties

Another important aspect of choosing a location is wind protection. Since many dahlia varieties, such as the impressive Dinnerplate dahlias, grow very tall and carry heavy flower heads, they are susceptible to wind. A sheltered spot near a wall, a fence, or among other sturdy perennials is ideal. This prevents these proud flowers from snapping during a summer storm.

Tips for the ideal spot at a glance

• Choose a full sun position with at least six hours of direct sunlight.
• Ensure well-draining, humus-rich soil without waterlogging.
• Find a location sheltered from the wind, especially for large-flowered varieties.
• Maintain sufficient planting distance to allow air to circulate between the leaves.

By following these tips, you create the perfect foundation for a flowering season that lasts from midsummer until the first frost.