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]
