Cosmos Cosimo Purple Red-White
Cosmos bipinnatus 'Cosimo Purple Red-White'
Not currently listed at our partner nurseries.
Essentials
At a Glance
Plant Type
Annual
Height
24 inches
Width
12 inches
Light
Full Sun, Partial Sun
Zones
5, 6, 7, 8, 9
Water
Moderate
Humidity
Moderate
Lifespan
Annual
Native To
North America
Toxicity
Non-toxic to humans and pets
The Story
Plant Bio
Cosmo Purple Red-White is known for its striking purple and white flowers, ideal for borders and summer gardens. This cultivar features a unique bicolor flower with deep purple edges and white centers, making it stand out among other Cosmos.
Bloom Period:
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 about 1/4 inch deep into well-draining soil in full sun.
- Mist cuttings or sow directly outdoors after last frost in spring.
- Water regularly to keep soil moist but not waterlogged during germination.
- Thin seedlings to 12-18 inches apart once established.
- Fertilize monthly with a balanced liquid fertilizer during the growing season.
- Deadhead spent flowers to promote continuous blooming.
Pro Tip
Plant in full sun with well-draining soil for vibrant, long-lasting blooms.
Keep It Thriving
Care Guide
Do
- Water deeply once a week during dry spells 🌱
- Pinch back early growth to encourage bushier plants
- Apply a balanced fertilizer monthly during peak season
Don't
- Avoid overwatering to prevent root rot ❌
- Do not fertilize late in the season to prevent weak, leggy growth
- Refrain from disturbing roots when transplanting
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Deadhead | ||||||||||||
| Harvest | ||||||||||||
| Plant |
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
Cosmos Cosimo Purple Red-White questions
What zones can Cosmos Cosimo Purple Red-White grow in?
Cosmos Cosimo Purple Red-White is hardy in USDA Zones 5–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Cosmos Cosimo Purple Red-White deer resistant?
Yes — Cosmos Cosimo Purple Red-White is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Cosmos Cosimo Purple Red-White bloom?
Cosmos Cosimo Purple Red-White 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 Cosmos Cosimo Purple Red-White need full sun?
Cosmos Cosimo Purple Red-White does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
Is Cosmos Cosimo Purple Red-White drought tolerant?
Yes — once established (usually after the first full season), Cosmos Cosimo Purple Red-White handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.
More Cosmos to compare
Fizzy Pink Cosmos
Cosmos bipinnatus 'Fizzy Pink'
Apricot Lemonade Cosmos
Cosmos bipinnatus 'Apricot Lemonade'
Klondike Cosmos Yellow Cosmos
Cosmos sulphureus 'Klondike Cosmos'
Cosmos Versailles White
Cosmos bipinnatus 'Versailles White'
Fizzy White Cosmos
Cosmos bipinnatus 'Fizzy White'
Xsenia Cosmos
Cosmos bipinnatus 'Xsenia'
Keep exploring
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Hardy in your zone?
Grow Cosmos Cosimo Purple Red-White 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.
