1 / 3Key characteristics
- Height
- 4 to 6 ft
- Bloom size
- Medium (6‑8 in)
- Flower color
- Yellow with scarlet red streaks
- Plant spacing
- 12-18 inches
Dahlias
Dahlia 'Gloriosa'
Gloriosa Dahlia
Dahlia 'Gloriosa' displays blooms with yellow bases splashed generously with scarlet red streaks and splashes in the formal decorative form, which is defined by tightly layered petals arranged in concentric circles to create a rounded and complete flower face. Each blossom emerges in midsummer and continues through to the first autumn frosts, offering long‑season visual interest. The painterly mix of yellow and red tones varies from bloom to bloom, giving each flower its own personality while maintaining the refined structure of the form. Its bold coloration and full, polished heads make it a standout in mixed borders and bouquet arrangements.
Availability
Many tubers and seeds are available online. For help in finding online sources, visit dahliaaddict.com.
Planting & care
Many tubers and seeds are available online. You can visit dahliaaddict for help in finding online sources.
Read the complete dahlia guideMore dahlias

Dahlia 'Kenora Wow'
Kenora Wow Dahlia
Blooms bright red; yellow toward the base

Dahlia 'Dutch Carnival'
Dutch Carnival Dahlia
Blooms maroon-red with golden yellow edges
Dahlia 'Wildman'
Wildman Dahlia
Blooms bright red petals with occasional yellow‑flecked highlights

Dahlia 'Flamethrower'
Flamethrower Dahlia
Blooms orange to red with yellow tips