Species
Dahlia variabilisDahlia18 other cultivars
‘Verda’Verda Dahlia
‘My Love’My Love Dahlia
‘Surprise’Surprise Dahlia
‘Flashback’Flashback Dahlia
‘Labyrinth Dinnerplate’Labyrinth Dinnerplate Dahlia
‘Melody Harmony’Melody Harmony Dahlia
‘Henriette’Henriette Dahlia
‘Karma Prospero’Karma Prospero Dahlia
‘Bishop of Oxford’Bishop of Oxford Dahlia
‘Fascination’Fascination Dahlia
‘Scura’Dark Dahlia
‘Happy Single First Love’Happy Single First Love Dahlia
‘Apache’Apache Dahlia
‘Karma Bon Bini’Karma Bon Bini Dahlia
‘Ambition’Ambition Dahlia
‘Megan Dean’Megan Dean Dahlia
‘Moonfire’Moonfire Dahlia
‘Lauren Michele’Lauren Michele Dahlia
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:
Essentials
At a Glance
Plant Type
Perennial
Height
36 inches
Width
24 inches
Light
Full Sun
Zones
5, 6, 7, 8, 9, 10
Water
Moderate
Humidity
Average
Lifespan
Perennial in suitable climates
Native To
Central America
Toxicity
Non-toxic
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
Multiply
Propagation Methods
Good to Know
Common Questions
Hart Dahlia questions
What zones can Hart Dahlia grow in?
Hart 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 Hart Dahlia deer resistant?
Not reliably. Deer may browse Hart Dahlia, especially tender spring growth — plan on repellents or fencing where pressure is high.
When does Hart Dahlia bloom?
Hart 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 Hart Dahlia need full sun?
Hart Dahlia does best in full sun (6+ hours).
More Dahlia to compare
Dahlia
Dahlia variabilis
Dinnerplate Cutting Dahlia
Dahlia pinnata 'Dinnerplate Cutting Blend'
Dahlia Mix
Dahlia x hybrida 'Mix'
Babette Giant Ball Dahlia
Dahlia pinnata 'Babette Giant Ball'
Lady Darlene Dahlia
Dahlia pinnata 'Lady Darlene'
Verda Dahlia
Dahlia variabilis 'Verda'
Keep exploring
Explore the genus
Grow Hart 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.