annual

Cosmic Orange Cosmos

Cosmos sulphureus 'Cosmic Orange'

Not currently listed at our partner nurseries.

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Essentials

At a Glance

Plant Type

Annual

Height

18 inches

Width

16 inches

Light

Full Sun, Partial Sun

Zones

5, 6, 7, 8, 9

Water

Low to moderate

Humidity

Average

Lifespan

Annual

Native To

Mexico

Toxicity

Non-toxic

The Story

Plant Bio

An annual species known for its bright, daisy-like flowers in shades of yellow, orange, and red, and its finely divided, feathery foliage. It thrives in hot, sunny conditions. This cultivar is specifically bred for its unique bright orange color and compact size, making it suitable for smaller gardens.

Uses & Benefits:

Cosmos sulphureus 'Cosmic Orange' provides vibrant color and attracts pollinators, enhancing garden aesthetics and ecological health.

Its easy care makes it suitable for beginner gardeners, and it supports local bee populations.

Serves as a nectar source for bees and butterflies, promoting biodiversity.

Marketplace

Where to Buy

We couldn't find this plant listed online right now.

Shipping costs Year-round shipping Free shipping

Planting

How to Grow

Tuck seeds into well-draining soil in full sun for best germination.
Keep soil moist but not waterlogged during germination, about 7-10 days.
Thin seedlings to 12-18 inches apart once they are established.
Water regularly during dry spells to encourage healthy growth.
Fertilize monthly with a balanced fertilizer for vibrant blooms.
Deadhead spent flowers to promote continuous flowering and tidy appearance.

Pro Tip

Plant cosmos in full sun and avoid overwatering to prevent root rot.

Keep It Thriving

Care Guide

Do

Water deeply once a week during dry periods 🌱
Deadhead regularly to extend blooming period 🌱
Fertilize with a balanced 10-10-10 fertilizer monthly 🌱
Provide good air circulation to prevent fungal diseases 🌱

Don't

Avoid overwatering, which can cause root rot ❌
Do not overcrowd plants to ensure proper air flow ❌
Refrain from using heavy mulch that retains too much moisture ❌
Don't forget to remove dead or diseased foliage ❌

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Deadhead
Plant

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Brightly colored border for sunny gardensWildflower meadow with vibrant orange accentsContainer plant on sunny patios

Companion Plants

Marigolds Zinnias Sunflowers Cosmos bipinnatus Lavender

Multiply

Propagation Methods

Good to Know

Common Questions

Cosmic Orange Cosmos questions

What zones can Cosmic Orange Cosmos grow in?

Cosmic Orange Cosmos 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 Cosmic Orange Cosmos deer resistant?

Yes — Cosmic Orange Cosmos is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

When does Cosmic Orange Cosmos bloom?

Cosmic Orange Cosmos typically blooms in summer to frost through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Cosmic Orange Cosmos need full sun?

Cosmic Orange Cosmos does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Is Cosmic Orange Cosmos drought tolerant?

Yes — once established (usually after the first full season), Cosmic Orange Cosmos handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.