The Dahlia ‘Colour Spectacle’ is a striking semi-cactus variety that produces massive 8-10 inch, fully double blooms in vibrant coral-orange with contrasting white tips. Growing 3 to 4 feet tall, it thrives in full sun and blooms from mid-summer until the first frost. [1, 2, 3]
Key Plant Specs & Care
- Flower Type: Semi-cactus (spiky, fully double petals)
- Height: 90 – 120 cm (24 – 48 inches)
- Bloom Time: July to October (Midsummer until frost)
- Soil Requirements: Rich, well-draining soil
- Sun Exposure: Full sun (can tolerate slight afternoon shade)
- Watering: Needs regular watering; the soil should be kept moist but not waterlogged [1, 2, 3, 4, 5]
Planting Tips
- When to Plant: Plant in the spring after all danger of frost has passed. If you are in the Southern Hemisphere, plant between October and December. [1, 2]
- Planting Depth: Plant tubers about 8 cm deep, spacing them 15-40 cm apart. Do not separate the roots from the main clump. [1]
- Winter Care: In cold climates (USDA Hardiness Zones below 3-8), tubers should be lifted in the fall (around July to October) and stored in a cool, frost-free location for the winter. [1, 2, 3]
