The Story
Plant Bio
A unique dark reddish-brown flower with a bushy, upright habit.
Known for its striking, dark velvety flowers that have a distinct chocolate-vanilla fragrance.
Uses & Benefits:
Essentials
At a Glance
Plant Type
Perennial
Height
24 inches
Width
18 inches
Light
Full Sun, Partial Sun
Zones
7, 8, 9, 10
Water
Moderate
Humidity
Average
Lifespan
Tender perennial
Native To
Mexico
Toxicity
Non-toxic to humans and pets
Bloom period
Mid-summer – Late summer
In flower about 2 months of the year
Planting
How to Grow
- Tuck seeds 1/4 inch deep into well-draining soil in spring.
- Mist cuttings to keep soil moist, avoiding overwatering.
- Allow seedlings to grow until they reach 6 inches, then thin out.
- Transplant young plants after last frost for best results.
- Water regularly, especially during dry spells, for vibrant blooms.
- Deadhead spent flowers to encourage continuous flowering.
Pro Tip
Plant in full sun for the most prolific, dark-colored blooms and vigorous growth.
Keep It Thriving
Care Guide
Do
- Water deeply once a week 🌱
- Deadhead regularly to promote more flowers
- Use well-draining soil to prevent root rot
- Provide full sun for optimal growth
Don't
- Avoid overwatering in humid conditions ❌
- Don’t fertilize excessively, as it can reduce flower color
- Steer clear of shady spots, which hinder flowering
- Don’t disturb roots during peak flowering
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Deadhead | ||||||||||||
| Fertilize | ||||||||||||
| Lift Store | ||||||||||||
| Plant | ||||||||||||
| Spring Cleanup |
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
Black Magic Chocolate Cosmos questions
What zones can Black Magic Chocolate Cosmos grow in?
Black Magic Chocolate Cosmos is hardy in USDA Zones 7–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Black Magic Chocolate Cosmos deer resistant?
Yes — Black Magic Chocolate Cosmos is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Black Magic Chocolate Cosmos bloom?
Black Magic Chocolate Cosmos typically blooms in mid-summer through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Black Magic Chocolate Cosmos need full sun?
Black Magic Chocolate Cosmos does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
Is Black Magic Chocolate Cosmos drought tolerant?
Yes — once established (usually after the first full season), Black Magic Chocolate Cosmos handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.
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Fizzy White Cosmos
Cosmos bipinnatus 'Fizzy White'
Klondike Cosmos Yellow Cosmos
Cosmos sulphureus 'Klondike Cosmos'
Cosmos Versailles White
Cosmos bipinnatus 'Versailles White'
Xsenia Cosmos
Cosmos bipinnatus 'Xsenia'
Keep exploring
Explore the genus
Hardy in your zone?
Grow Black Magic Chocolate Cosmos 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.