Big Bang™ Cosmic Eye Coreopsis

Coreopsis x 'Cosmic Eye'

Plants that Work®

Striking Deep Maroon Eye with Yellow Tips Creates Cosmic Star Cluster Effect All Season
Thrives in Zones 5-9
Grows 1-2 ft Tall and Wide
Native, Pollinator-Friendly Perennial
Stunning Yellow Fall Foliage

$34⁸⁴

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Plant Size

Product variants

Planting & Care

Where to Plant

Sunlight: This variety thrives in full sun, requiring at least 6 to 8 hours of direct light daily. While it can tolerate light afternoon shade, the stems may become floppy and the flower count will drop significantly without maximum sun exposure.
Soil: It prefers well drained soil that is not overly rich. If you have heavy clay, plant it in a raised bed or "mound" the soil to ensure water doesn't sit around the crown, which can lead to winter rot.

Watering Requirements

During the first growing season, water deeply twice a week to help the roots establish deep into the soil. Once the plant is mature, it is quite drought tolerant and usually only needs supplemental water during long dry spells. Inconsistent watering or overly wet feet can lead to powdery mildew and smaller, less vibrant "eyes" in the center of the blooms.

Pruning Tips

This Coreopsis blooms on new wood, so it benefits from a "haircut" throughout the season. Use garden shears to deadhead spent blooms regularly to encourage the plant to produce a continuous flush of new flowers rather than setting seed. In early spring, cut the entire plant back to about 3 inches above the ground to make room for fresh, vigorous growth.

Fertilizer Needs

Apply a balanced, slow release fertilizer once in early spring as new growth appears. Avoid using high nitrogen fertilizers late in the summer because this encourages tender green growth that won't have time to harden off before the first frost, making the plant vulnerable to winter damage.

Delivery and Shipping

Shipping Rates

Ships in 7-10 business days • Tracking provided • Weather protected

Under $50	$9.99
$50 - $99.99	$14.99
$100 - $149.99	$16.99
$150 - $198.99	$24.99
$199+	FREE

✓ Zone-specific timing • ✓ Professional packaging • ✓ Health guarantee

Understanding Our Container Sizes

At Nature Hills, our plants are sold in industry-standard nursery containers. You will notice we use the word "container" rather than "gallon." Container numbers follow a nursery trade size standard, not liquid volume. The number tells you the plant's size category and general maturity level. A larger container means a more established plant with a stronger root system.

Container Sizes

Quart

Plant age: 6 months to 1 year
Best for: Ground covers, perennials, ornamental grasses
What to expect: Our smallest and most affordable size. Well-suited for planting in multiples across a large area. Allow 1 to 2 seasons for full establishment.

#1 Container

Plant age: 1 to 2 years
Best for: Shrubs, perennials, smaller trees
What to expect: About the size of a large coffee can. A well-developed root system in a manageable size. Good value choice when you have time to let the plant grow into the space over a season or two.

#2 Container

Plant age: 2 to 3 years
Best for: Shrubs and trees where you want faster establishment
What to expect: A noticeable step up from a #1 in both plant size and root development. Good choice when you want visible presence without going to a larger size.

#3 Container

Plant age: 3 to 4 years
Best for: Most plants, most situations — flowering trees, shade trees, evergreen shrubs
What to expect: Our most popular size. Strong, developed root system. Plants in a #3 container make an immediate visual impact from day one. If you want a head start rather than waiting seasons for a plant to fill in, this is typically the right choice.

#5 Container and Larger

Plant age: 4 to 5+ years
Best for: Specimen plants, privacy screens, maximum instant impact
What to expect: Large, mature plants ready to make an immediate statement in your landscape. We also carry #7 and larger sizes for select varieties.

Why "Container" and Not "Gallon"?

Nursery container sizes follow an industry trade standard established for the nursery and horticulture industry. The number is a size designation, not a measurement of liquid volume. Actual soil volume varies by plant type, root mass, and growing medium. Using "container" is the accurate industry term. When you see #1, #2, or #3, think of it as the plant's size tier, not a gallon measurement.

Root Pouch Containers

Some Nature Hills plants arrive in a Root Pouch, a breathable fabric container made from 100% recycled materials. Root Pouches encourage denser root development through air pruning, which discourages root circling and promotes a stronger, more fibrous root ball at the time of planting.

Plants growing in Root Pouch fabric containers, showing the breathable woven fabric construction

There are two types. Knowing which one you have changes how you plant:

Degradable (brown or tan fabric): Plant the entire pouch directly in the ground. The fabric breaks down naturally in the soil over time.
Non-degradable (black or gray fabric): Remove the pouch before planting. Cut the bottom open with scissors, then peel the sides away. The fibrous root ball will hold its shape.

Not sure which type you have? Check the tag on your plant or contact us and we will confirm.

Full Root Pouch planting guide

Choosing the Right Size

Size	Plant Age	Best For
Quart	6 mo to 1 yr	Ground covers, perennials, grasses. Budget-friendly for mass plantings.
#1 Container	1 to 2 yrs	Shrubs, perennials, small trees. Value choice for patient gardeners.
#2 Container	2 to 3 yrs	Shrubs and trees where you want faster establishment.
#3 Container	3 to 4 yrs	Most plants. Immediate visual impact. Our most popular size.
#5 and larger	4+ yrs	Specimen plants, privacy screens, maximum instant impact.

Still not sure which size is right for your project? Our plant specialists are happy to help. Contact us and we will point you in the right direction.

Plant specifications
Plant Characteristics	Cold hardy, Low Maintenance, Deer-resistant, Reblooming, Flowering, Attracts Butterflies, Attracts pollinators, Heat Tolerant, Drought resistant, Container Friendly
Sunlight	Full sun
Height	1-2 ft
Width	1-2 ft
Watering Needs	Moderate
Growth Rate	Moderate
Blooms In	Summer, Fall
Flower Color	Yellow
Native	Yes
Botanical Name	Coreopsis x 'Cosmic Eye'
Species	x
Cultivar	Cosmic Eye
Class	Asterales, Magnoliopsida
Does Not Ship To	AK, HI, ID, MT, PR

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Frequently Asked Questions

What USDA hardiness zones is Big Bang™ Cosmic Eye Coreopsis suitable for?

Big Bang™ Cosmic Eye Coreopsis thrives in USDA zones 4-9. This hardy perennial tolerates various soil conditions and weather extremes across these zones. Plant in spring after last frost for best establishment.

How tall and wide will Big Bang™ Cosmic Eye Coreopsis grow at maturity?

Big Bang™ Cosmic Eye Coreopsis reaches 12-16 inches tall and spreads 12-18 inches wide at maturity. This compact perennial forms a neat, rounded habit perfect for front borders or container gardens. Space plants 12-15 inches apart for best results, available at naturehills.com.

Does this coreopsis variety require full sun or will it tolerate partial shade?

Big Bang™ Cosmic Eye Coreopsis thrives in full sun for best flowering performance. While it can tolerate some light shade, you'll get fewer blooms and potentially leggy growth. Plant in a sunny location with 6+ hours of direct sunlight for maximum flower production.

How often should I water Big Bang™ Cosmic Eye Coreopsis once established?

Big Bang™ Cosmic Eye Coreopsis is drought-tolerant and requires minimal watering once established. This hardy perennial can sustain itself through dry periods without supplemental irrigation. Water only during extended drought or if foliage shows stress.

What are the most common pests or diseases that affect this coreopsis variety?

Big Bang™ Cosmic Eye Coreopsis is notably resistant to most pests and diseases, with deer and rabbits avoiding it naturally. Occasional aphids or powdery mildew may appear in humid conditions. Ensure good air circulation and avoid overhead watering to prevent issues with this hardy variety available at naturehills.com.

What colors are the flowers and do they change throughout the blooming period?

The flowers feature a dark yellow center with a prominent deep maroon eye tipped in bright yellow, creating striking bi-colored 2-inch blooms. This spectacular color combination remains consistent from early summer through autumn. Plant several together for maximum visual impact in your garden border.

What size container will my plant arrive in and when is the best time to ship?

Your Big Bang™ Cosmic Eye Coreopsis will arrive in a 4-inch container. Spring through early fall offers the best shipping window, allowing roots to establish before winter. Plant 6-8 weeks before your first hard frost for optimal establishment.

Big Bang™ Cosmic Eye Coreopsis

Coreopsis x 'Cosmic Eye'