
Scarlet Dahlia
Dahlia coccinea 'True Wild Form'
Not currently listed at our partner nurseries.
Essentials
At a Glance
Plant Type
Perennial
Height
36 inches
Width
24 inches
Light
Full Sun, Partial Sun
Zones
8, 9
Water
Moderate
Humidity
Moderate
Lifespan
Tender perennial
Native To
Mexico
Toxicity
Toxic to dogs and cats
The Story
Plant Bio
Dahlia coccinea is a native species characterized by its bright orange flowers and attractive foliage, often used in wildflower gardens. This cultivar represents the true wild form of Dahlia coccinea, maintaining authentic traits and characteristics distinct from cultivated varieties.
Bloom Period:
Uses & Benefits:
Marketplace
Where to Buy
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Planting
How to Grow
- Choose a sunny location with well-draining soil for planting.
- Tuck seeds or tubers about 4 inches deep in early spring after the last frost.
- Water thoroughly after planting to settle the soil around the roots.
- Maintain consistent moisture, especially during dry spells in summer.
- Fertilize monthly with a balanced, water-soluble fertilizer during the growing season.
- Pinch back the stems early to encourage bushier growth and more blooms.
Pro Tip
Mulch around plants to retain moisture and suppress weeds, especially during hot months.
Keep It Thriving
Care Guide
Do
- Water regularly to keep soil moist but not waterlogged π±
- Deadhead spent blooms to promote continuous flowering
- Fertilize monthly during the growing season for optimal growth
- Provide staking or support for tall varieties to prevent toppling
Don't
- Avoid overwatering, which can cause root rot β
- Donβt disturb the tubers during the growing season
- Refrain from fertilizing late in the season to prevent weak growth
- Donβt plant in heavy, poorly-drained clay soil without amendments
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Deadhead | ||||||||||||
| Fertilize | ||||||||||||
| 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
Scarlet Dahlia questions
What zones can Scarlet Dahlia grow in?
Scarlet Dahlia is hardy in USDA Zones 8β10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Scarlet Dahlia deer resistant?
Not reliably. Deer may browse Scarlet Dahlia, especially tender spring growth β plan on repellents or fencing where pressure is high.
When does Scarlet Dahlia bloom?
Scarlet Dahlia typically blooms in mid-summer through late summer. Exact timing shifts a week or two with your zone β Sow's bloom calendar maps it to your garden.
Does Scarlet Dahlia need full sun?
Scarlet Dahlia does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
More Dahlia to compare

Dahlia
Dahlia variabilis

Dinnerplate Cutting Dahlia
Dahlia x pinnata 'Dinnerplate Cutting Blend'

Hart Dahlia
Dahlia variabilis 'Hart'

Babette Giant Ball Dahlia
Dahlia x pinnata 'Babette Giant Ball'

Lady Darlene Dahlia
Dahlia x pinnata 'Lady Darlene'

Mystic Haze Dahlia
Dahlia x pinnata 'Mystic Haze'
Keep exploring
Explore the genus
Collections featuring this plant
Hardy in your zone?
Grow Scarlet 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.
