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Cosmos Seeds - Rubenza

Mauve and magenta blooms are a rare find

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Sulphur Cosmos Seeds - Crest Red

Sulphur Cosmos Seeds - Crest Red

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About the Variety

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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

  • 48 inches

COLOR

  • Pink

Rubenza Cosmos are easy to grow and long lasting. Their uniquely colored pink and magenta blooms grow fast and attract pollinators.

  • • Easy to grow annual with uniquely colored blooms
  • • Open pollinated with long-lasting Summer blooms
  • • Thrives in bright, sunny growing 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 20 Up to 80 Sq. Ft

Planting Guide

View our Cosmos Planting Guide to learn more.

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    Cosmos Seeds - Rubenza FAQs

    What is Rubenza Cosmos also known as?

    Rubenza Cosmos is also known as Mexican Aster.

    Is Rubenza Cosmos resistant to animals or disease?

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

    Customer Reviews

    Overall rating: 2.2 / 5 from 5 reviews.

    I purchased three different cosmo seeds and started all together. The other two are doing great. NONE of these came up. There were also half as many seeds in this pack to begin so a pricey failure.

    Cosmos Seeds - Rubenza

    Store owner replied: Hello Becky. Thank you for sharing your experience and for the helpful comparison with the other two Cosmos varieties you started at the same time. Cosmos are generally quick to germinate in warm conditions when sown shallowly and kept consistently moist but not saturated, so having two varieties establish successfully under the same care while none of this variety emerged is useful information and understandably disappointing. Some specialty varieties are packaged with lower seed counts than more common Cosmos cultivars, which can make unsuccessful germination especially frustrating when there are fewer seeds available to try. We appreciate you giving our Customer Care team the opportunity to address your concerns and are glad we were able to provide a resolution. We stand behind our products and our Grow Guarantee and truly appreciate your understanding and the opportunity to help!

    Only 2 of these seeds from the entire packet germinated.

    Cosmos Seeds - Rubenza

    Store owner replied: Hello Jenni. Thank you for sharing your experience. We’re sorry to hear that germination was lower than expected, as we understand how disappointing that can be. We’re glad we were able to provide a resolution and that you’re satisfied with the outcome. As always, we stand by our products and appreciate the opportunity to make things right!

    None of these seeds germinated and I ended up having to buy a last minute standard mix from the garden store that did very well. Disappointing!

    Cosmos Seeds - Rubenza

    Store owner replied: Hello Liz. Thank you for your review of Eden Brothers! We truly appreciate you taking the time to share your experience, as feedback like this helps us improve our products. From our follow-up with Customer Service, it looks like we were able to assist you, and we’re glad we could help. Thank you again for bringing this to our attention!

    We had a strange winter and spring where I live and did mt best to accommodate my seeds. I planted all 50 of these seeds in various locations and various times due to strange weather. I had a 0% germination rate and was so sad. I planted other flowers in the same conditions and had much better success.

    Cosmos Seeds - Rubenza

    Store owner replied: Hello, Kirby Thank you for your review of Eden Brothers! We greatly appreciate you bringing this to our attention as feedback like yours helps us deliver the best quality products possible. After speaking with our Customer Service Team, it seems we were able to resolve this for you. If you have any other issues, feel free to reach out!

    These have been putting out tons of beautiful flowers for weeks already, and the deep red color is beautiful. Great filler flower for bouquets! I'm excited to have these keep blooming for the rest of the summer.

    Cosmos Seeds - Rubenza

    Companion Plants

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