• Pink and white cosmos radiance flowers with yellow centers in a sunny garden.
  • Bright pink cosmos radiance flower with yellow center against a blurred green background.
  • Pink cosmos radiance flowers with yellow centers blooming in a green garden setting.
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Cosmos Seeds - Radiance

Glossy pink blooms that are nothing short of mesmerizing

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About the Variety

AAS Winner

Key Features

Heat Tolerant
Drought Tolerant
Prefers Lean Soil
Container Friendly
Attracts Bees
Attracts Butterflies
Fast Growing
Easy to Grow
Perfect for Cut Flowers
Perfect for Borders
Deer Resistant
Rabbit Resistant

Plant Details

BOTANICAL NAME

Cosmos bipinnatus

LIFE CYCLE

  • Annual

SEED TYPE

  • Open Pollinated Seed

LIGHT REQUIREMENT

  • Full Sun

BLOOM SEASON

  • Summer through Fall

DAYS TO MATURITY

  • 60 to 90 days

GROWTH HABIT

  • Clumping

PLANT HEIGHT

  • 44 to 60 inches

COLOR

  • Pink

Radiance Cosmos seeds produce the classic cosmos that everyone adores. The deep, wine red of the petals pairs beautifully with the yellow center. The Radiance Cosmos, like all other cosmoses, is simple to grow; even novice gardeners will have no trouble growing these 3 to 5 foot beauties. Order your seeds today, and in mid-summer, you'll be beaming with pride at the blooms on your Radiance Cosmos flowers!

  • • Easy to grow annual with long-lasting blooms
  • • Pollinator attractor with pink Summer blooms
  • • Thrives in full sun or partially shaded areas

Planting Information

PLANTING SEASON

  • Spring

SOWING METHOD

  • Direct Sow

PLANTING DEPTH

  • 1/4 inch

WATER NEEDS

  • Low

PLANT SPACING

  • 9 to 12 inches

HARDINESS ZONES

  • N/A - Annual

SEED PREP

  • Requires Light

COVERAGE

Amount Avg Seed Count Recommended Coverage
Packet 160 Up to 80 Sq. Ft
1 Ounce 4,760 Up to 625 Sq. Ft
1/4 Pound 19,040 Up to 2,500 Sq. Ft
1 Pound 76,160 Up to 10,000 Sq. Ft

Planting Guide

View our Cosmos Planting Guide to learn more.

Ready to Grow

We guarantee that our seeds & bulbs will be true to type and ready to thrive. If something doesn't grow as expected, we will make it right. Questions? Call us at 855-440-2929

All cosmos
Grown by Our Community 

    Cosmos Seeds - Radiance FAQs

    What is Radiance Cosmos also known as?

    Radiance Cosmos is also known as Mexican Aster.

    Is Radiance Cosmos resistant to animals or disease?

    Radiance Cosmos is deer resistant, meaning deer generally avoid it due to its taste, texture, or aroma.

    Customer Reviews

    Overall rating: 5.0 / 5 from 4 reviews.

    Customer photo review of Cosmos Seeds - Radiance

    Planted these for the first time this year and I love these next to the pure white cosmos I have. Just beautiful! Cosmos always seem to really start putting out blooms when the weather cools a bit, in my area.

    Rachel 5/5

    Cosmos Seeds - Radiance

    Customer photo review of Cosmos Seeds - Radiance

    Enjoyed planting these seeds and watching the plants grow to 6 feet tall with a continuous blooming cycle. Flowers glow early in the morning.

    Bill S. 5/5

    Cosmos Seeds - Radiance

    These beautiful flowers make a statement they get huge and they just keep flowering. They look great in vases one of my favs

    Alexandra 5/5 Verified

    Cosmos Seeds - Radiance

    So beautiful in my later summer garden. My flowers were very light pink. Beautiful but a littlel disappointed. Still healthy and beautiful. I would love to have the rose colored to go with the white I also planted from you.

    Debora W. 5/5 Verified

    Cosmos Seeds - Radiance

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