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Are Dahlias a Perennial Flower?

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Perennials are plants that grow, bloom and die back at the end of the season, returning the following season to go through the whole process again. Dahlias may be considered perennials, but there are a few differences between dahlias and the usual garden perennials.

Bulbs

Bulbs also return year after year but they are classified separately because of their root structure. They are often grown in separate beds because their care requirements are different from those of other perennials.

Tubers

Although dahlias are often classified and sold as bulbs, they are actually tubers. Tubers are swollen root structures with no buds or eyes. Whether you call them bulbs or tubers, dahlias are planted and maintained like summer bulbs.

  • Perennials are plants that grow, bloom and die back at the end of the season, returning the following season to go through the whole process again.
  • Although dahlias are often classified and sold as bulbs, they are actually tubers.

Tender Plants

Dahlia tubers are tender and will only survive winter temperatures in U.S. Department of Agriculture zones 9 and warmer. In cooler zones, they must be dug up, cleaned off and stored in a frost-free location, then replanted the following season.

Dahlias Annual Or Perennial Plants?

Dahlias (Dahlia spp.) are prized for their large, showy blooms that come in a stunning array of colors, shapes and sizes. This is true about dahlias, but only to a point. Others dig up the tubers and store them over the winter, planting them again the next spring. Most dahlias grow best in USDA zones 8 through 11. In zones 8 and 9, the vegetation usually dies back to the ground when cooler weather arrives, or it can be cut off to achieve a neater appearance. Temperatures in the storage area should remain consistently between 35 and 50 degrees Fahrenheit. Proper culture is vital to keep your flowers blooming year after year. Overly wet soil may rot the tubers.

  • Dahlias (Dahlia spp.)
  • are prized for their large, showy blooms that come in a stunning array of colors, shapes and sizes.
  • In zones 8 and 9, the vegetation usually dies back to the ground when cooler weather arrives, or it can be cut off to achieve a neater appearance.

Dahlias Annual Or Perennial Plants?

Dahlias (Dahlia spp.) are prized for their large, showy blooms that come in a stunning array of colors, shapes and sizes. This is true about dahlias, but only to a point. Others dig up the tubers and store them over the winter, planting them again the next spring. Most dahlias grow best in USDA zones 8 through 11. In zones 8 and 9, the vegetation usually dies back to the ground when cooler weather arrives, or it can be cut off to achieve a neater appearance. Temperatures in the storage area should remain consistently between 35 and 50 degrees Fahrenheit. Proper culture is vital to keep your flowers blooming year after year. Overly wet soil may rot the tubers.

  • Dahlias (Dahlia spp.)
  • are prized for their large, showy blooms that come in a stunning array of colors, shapes and sizes.
  • In zones 8 and 9, the vegetation usually dies back to the ground when cooler weather arrives, or it can be cut off to achieve a neater appearance.
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