Dahlia decorative “Yellow and Red” bulbs (actually tuberous roots) produce stunning, large bicolor blooms. They are typically planted in spring or just before the rainy season and require full sunlight, well-draining soil, and regular watering to bloom within 8 weeks. [1, 2, 3, 4, 5]
Varieties & Characteristics
- Decorative Dahlias: Characterized by wide, flat, and fully double petals that often curve inward or backward.
- Bicolor Patterns: These specific bulbs feature a brilliant mix of fiery red and bright yellow, ranging from “pompon” varieties (small, dense, globe-like blooms) to massive dinnerplate varieties. [1, 2, 3, 4, 5]
Planting & Care Guide
- Soil: They thrive in fertile, loose, and well-drained soil with a pH of 6.5 to 7.0. Mix in organic compost before planting. [1, 2, 3, 4]
- Depth & Spacing: Plant the tuber 6 to 8 inches deep with the growing point (or “eye”) facing upward. Space them 12 to 36 inches apart depending on the variety’s mature size. [1, 2, 3, 4, 5]
- Watering: Wait until sprouts appear above ground to start watering regularly. Keep the soil moist but avoid waterlogging to prevent the tubers from rotting. [1, 2, 3]
- Sunlight: They need at least 6 to 8 hours of direct, daily sunlight to produce vibrant blooms. [1, 2]
- Support: Taller varieties will require staking (like bamboo or metal sticks) to prevent strong winds from breaking the heavy flower heads. [1, 2]
