Altona chooses the Merck dahlia as the 2025 flower queen!
In the Altonaer Volkspark, the Merck dahlia was chosen as Dahlia of the Year 2025, ceremonially voted by visitors.

Altona chooses the Merck dahlia as the 2025 flower queen!
As every year at the end of the season, the dahlia garden in Altonaer Volkspark made a decision that has a special place in the hearts of many plant lovers. The visitors had the opportunity to cast their vote and chose theMerck Dahliathe audience winner. With a scientific name that stands for a venerable Hamburg senator and plant lover, Heinrich Johann Merck - " Dahlia merckii “ – she can now proudly hold the titleDahlia of the year 2025carry.
The Merck dahlia impresses not only with its name, but also with its growth of approx70 to 90 centimetersand a heyday that comes fromJuly to Octobersuffices. This beautiful plant closes the season in the dahlia garden and marks the beginning of overwintering for its tubers. In a region where overwintering is an important aspect, all dahlia lovers are now playing it safe and preparing for next year.
A look at care
The World of Dahlias is diverse and requires a little know-how. These plants originally come from Central America and are characterized by an impressive variety of colors and shapes. When choosing a location, a sunny and protected place is advantageous, ideally with a pH value of around 6.5. Who doesn't love the idea that with a little sensitivity you can grow your own flowers?
In spring, after careful care in winter, the tubers can finally be put back in the ground. According to garden care tips, large tubers should be divided before planting, planted in a well-prepared planting hole with compost and horn shavings and watered regularly. Adaptation to the growing conditions is crucial - only the strongest shoots are left standing.
Winterization made easy
As is well known, dahlias are not hardy. After the first frost, the tubers should be dug up and checked for diseases. They can be used at temperatures of4 to 8 degreesOverwinter in a dark, dry cellar. Alternatively, there is the option of covering them in the bed with a layer of leaves, although this involves a certain risk. So things stay exciting for true garden lovers even in winter!
With the end of the dahlia garden, the time has come to dream and plan for the next season. The flowering of the Merck dahlia in one year, exactlyMid-July, has many hobby gardeners already dreaming of bright colors and lush flowers. The two places that the dahlia garden occupies in the hearts of Hamburg residents are certain: a place of joy and devotion to the plant world.
Further information about the Merck dahlia can also help to strengthen your green thumb and optimally prepare for the next planting season.