Garden hybrid
Dahlia x hybridaGarden Dahlia16 other cultivars
‘Mix’Dahlia Mix
‘Dinnerplate Blend’Dinnerplate Dahlia
‘Bishop's Children’Bishop's Children Dahlia
‘Café au Lait’Café au Lait Dahlia
‘Orange’Orange Dahlia
‘Arabian Night’Arabian Night Dahlia
‘Firepot’Firepot Dahlia
‘Bishop of Canterbury’Bishop of Canterbury Dahlia
‘Labyrinth’Dahlia Labyrinth
‘Sagitta’Dahlia Sagitta
‘Bishop of Leicester’Bishop of Leicester Dahlia
‘Lisonette Dinnerplate’Lisonette Dinnerplate Dahlia
‘Red Labyrinth’Red Labyrinth Dahlia
‘Desert Sunset’Desert Sunset Dahlia
‘Bednall Beauty’Bednall Beauty Dahlia
‘Terracotta’Dahlia 'Terracotta'
The Story
Plant Bio
Dahlia x hybrida 'Seattle' is a herbaceous perennial known for its bushy habit, lush green foliage, and large, vibrant flowers that range from deep reds to purples, often with a symmetrical, daisy-like appearance.
This cultivar is celebrated for its striking, rich-colored blooms and its reliable performance in garden borders, offering long-lasting floral displays from mid to late summer.
Uses & Benefits:
Essentials
At a Glance
Plant Type
Perennial
Height
36 inches
Width
24 inches
Light
Full Sun
Zones
8, 9, 10
Water
Moderate
Humidity
Average
Lifespan
Perennial
Native To
Cultivated hybrid
Toxicity
Non-toxic to humans and pets
Bloom period
Mid-summer – Late fall
In flower about 5 months of the year
Planting
How to Grow
- Tuck tubers in well-draining soil in early spring.
- Water regularly to keep soil moist but not waterlogged.
- Fertilize with a balanced fertilizer monthly during growing season.
- Stake tall varieties to support heavy blooms.
- Deadhead spent flowers to encourage more blooms.
- Lift tubers in late fall after first frost for overwintering in colder zones.
Pro Tip
Plant in a sunny spot with rich, well-draining soil for best results.
Keep It Thriving
Care Guide
Do
- Water consistently during the growing season 🌱
- Apply a balanced fertilizer monthly
- Stake tall stems for support
Don't
- Avoid overwatering to prevent rot ❌
- Don’t plant in poorly drained soil
- Refrain from disturbing tubers during the growing season
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Deadhead | ||||||||||||
| Lift Store | ||||||||||||
| Pinch | ||||||||||||
| Plant | ||||||||||||
| Stake |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Companion Plants
Multiply
Propagation Methods
Good to Know
Common Questions
Seattle Dahlia questions
What zones can Seattle Dahlia grow in?
Seattle Dahlia is hardy in USDA Zones 8–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Seattle Dahlia deer resistant?
Not reliably. Deer may browse Seattle Dahlia, especially tender spring growth — plan on repellents or fencing where pressure is high.
When does Seattle Dahlia bloom?
Seattle Dahlia typically blooms in mid-summer through late fall. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Seattle Dahlia need full sun?
Seattle Dahlia does best in full sun (6+ hours).
More Dahlia to compare
Dahlia
Dahlia variabilis
Dinnerplate Cutting Dahlia
Dahlia pinnata 'Dinnerplate Cutting Blend'
Hart Dahlia
Dahlia variabilis 'Hart'
Dahlia Mix
Dahlia x hybrida 'Mix'
Babette Giant Ball Dahlia
Dahlia pinnata 'Babette Giant Ball'
Lady Darlene Dahlia
Dahlia pinnata 'Lady Darlene'
Keep exploring
Explore the genus
Hardy in your zone?
Grow Seattle Dahlia with confidence
See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.