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Dahlia: A Riot of Color from Summer to Frost
Dahlias are beloved for their vibrant colors and diverse forms, bringing life to gardens from mid-summer until the first frosts. They are a popular choice for adding late-season color when many other plants have faded.
Considerations for Pets
- Dahlias grow from tubers, which might be attractive to animals but could cause gastrointestinal upset if ingested.
Scientific Classification
- Genus: Dahlia
- Family: Asteraceae (also known as Compositae)
- Type: Dicotyledonous, herbaceous perennial plant
Distribution and Habitat
- Native to Mexico.
- Commonly grown in gardens worldwide.
- Thrive in dry and sunny spots.
- In colder climates like North America, they are often treated as tuberous-rooted tender perennials.
Morphological Characteristics and Growth Habits
- Bushy and tuberous.
- Known for their variation in form and color. Varieties include:
- Dinner Plate Dahlias
- Cactus Dahlias
- Fringed and Quilled form Dahlias
- Dwarf Dahlias
- Anemone Flowering Dahlias
- Cartwheel/Honka Dahlias
- Dark Leaf Dahlias
- Decorative Dahlias
- One tuber can produce hundreds of flowers if regularly picked.
Traditional Uses and Significance
- Prized as cut flowers.
- Used in floral displays and parades (e.g., Zundert in the Netherlands).
Interactions with Other Organisms
- Attract bees and butterflies.
Further Information
- National Dahlia Society (NDS)
- National Dahlia Collection (located at Winchester Growers, Varfell Farm, Penzance) - Includes over 1600 named species and cultivars
- BBC Gardening Guides