Dahlia
Dahlia variabilis 'Hart'
Not currently listed at our partner nurseries.
Essentials
At a Glance
Plant Type
Perennial
Height
36 inches
Width
24 inches
Light
Full Sun
Zones
5, 6, 7, 8, 9
Water
Moderate
Humidity
Average
Lifespan
Perennial in suitable climates
Native To
Central America
Toxicity
Non-toxic
The Story
Plant Bio
Dahlia variabilis 'Hart' is known for its vibrant purple flowers and bushy growth habit. This cultivar is prized for its long-lasting blooms and attractiveness to pollinators.
Uses & Benefits:
Marketplace
Where to Buy
We couldn't find this plant listed online right now.
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Planting
How to Grow
- Tuck seeds or tubers into well-draining soil in spring after the last frost.
- Water regularly to keep soil moist but not waterlogged, especially during growth.
- Provide full sun for optimal flowering and growth.
- Fertilize monthly with a balanced fertilizer during the growing season.
- Stake tall varieties to prevent breakage as flowers develop.
- Deadhead spent blooms to encourage continuous flowering.
Pro Tip
Plant in rich, well-drained soil and mulch to retain moisture and suppress weeds.
Keep It Thriving
Care Guide
Do
- Water deeply once a week during dry spells 🌱
- Pinch back young plants to encourage bushier growth
- Apply a balanced fertilizer monthly during the growing season
Don't
- Avoid overwatering to prevent root rot ❌
- Do not disturb tubers during dormancy
- Refrain from fertilizing late in the season to avoid weak, leggy growth
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
Dahlia questions
What zones can Dahlia grow in?
Dahlia is hardy in USDA Zones 5–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Dahlia deer resistant?
Not reliably. Deer may browse Dahlia, especially tender spring growth — plan on repellents or fencing where pressure is high.
When does Dahlia bloom?
Dahlia typically blooms in summer to fall through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Dahlia need full sun?
Dahlia does best in full sun (6+ hours).
More Dahlia to compare
Dahlia
Dahlia variabilis
Dinnerplate Dahlia
Dahlia x pinnata 'Dinnerplate Cutting Blend'
Lady Darlene Dahlia
Dahlia x pinnata 'Lady Darlene'
Babette Giant Ball Dahlia
Dahlia x pinnata 'Babette Giant Ball'
Mrs. Eileen Dahlia
Dahlia spetabilis 'Mrs Eileen'
Verda Dahlia
Dahlia variabilis 'Verda'
Keep exploring
Explore the genus
Collections featuring this plant
Grow 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.
