Skip to product information
1 of 5
In stock
Shipping now

Cosmos Seeds - Double Click White Knight

These fluffy double blooms could pass for pincushion flowers

Size
Trusted by 4M+ Gardeners
Grow Guarantee
Fast Shipping
Secure
Shipped from Asheville, NC

About the Variety

Up to 20% off

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

  • 36 inches

PLANT TYPE

  • Double Click

COLOR

  • White

Double Click White Knight Cosmos are absolutely charming flowers with large double blooms and fern-like pinnatisect leaf shapes. They are easy to grow, and make excellent cut flowers.

  • • Easy to grow annual with full double blooms
  • • Open pollinated with long-lasting, white 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 50 Up to 80 Sq. Ft

Planting Guide

View our Cosmos Planting Guide to learn more.

All cosmos
Grown by Our Community 

    1 of 0

    Cosmos Seeds - Double Click White Knight FAQs

    What is Double Click White Knight Cosmos also known as?

    Double Click White Knight Cosmos is also known as Mexican Aster.

    Is Double Click White Knight Cosmos resistant to animals or disease?

    Double Click White Knight Cosmos is deer resistant, meaning deer generally avoid it due to its taste, texture, or aroma.

    Customer Reviews

    Overall rating: 1.3 / 5 from 19 reviews.

    Customer photo review of Cosmos Seeds - Double Click White Knight

    I was very excited to try these this year alongside some zinnias and other cosmos. They were planted at the same time, in the same conditions and I have literally one that germinated. I reached out to Eden brothers and they did refund me, which I appreciated, but now I have a hole in my garden bed and I will miss these when I cut my others! Probably won’t buy this kind again. My one has not bloomed yet.

    Cosmos Seeds - Double Click White Knight

    Store owner replied: Hello Ali. Thanks for your review of Eden Brothers! We are sorry you had this experience, but we’re glad our Customer Service Team was able to assist and get things sorted out. If anything else comes up or you need further support, don’t hesitate to reach out, as we’re always happy to help!

    I'm so disappointed. I am an experienced gardener and plant cosmos yearly. These sadly did not germinate at all. I bought 4 packets and none germinated. An expensive loss

    Cosmos Seeds - Double Click White Knight

    Store owner replied: Hello Emily. Thank you for your review for us at Eden Brothers! We really appreciate you reaching out and sharing your experience! Feedback like yours is incredibly helpful as we work to improve our products. We're glad our Customer Service Team was able to assist you, and we truly hope your garden thrives this season. Thanks again for taking the time to connect with us!

    I am an avid and experienced gardener and really wanted to grow the double bloom white cosmos. BUT, I did not have even one seed from this pack germinate. Utterly disappointed in this Eden seed pack.

    Cosmos Seeds - Double Click White Knight

    Store owner replied: Hello Sarah in Annapolis. We appreciate you taking the time to report these findings so we can share them with our growers in hopes of preventing such occurrences moving forward. We strive to ensure the quality of our products and can share in your frustrations, as we wish for all customers to be satisfied with their purchase. After speaking with our Customer Service Team, it seems we were able to resolve this for you. Thanks for your time in sharing your experience with us!

    I should have read the reviews, not one of these sprouted for me: on a heat mat under lights. Very sad about this as they look really pretty and I was looking for a tall neutral flowering annual for my beds

    Cosmos Seeds - Double Click White Knight

    Store owner replied: Hello Catherine. Thanks so much for your review! We greatly appreciate your feedback on this matter. We're always looking for ways to improve our products and will certainly take your information into account. If you ever have any other concerns or questions, feel free to reach out to us and we'll be happy to do all we can to assist. Thanks again for your review and best wishes for your growing season!

    Planted the entire pack in seed blocks under lighting and only one sprouted. Very disappointed in the lack of germination.

    Cosmos Seeds - Double Click White Knight

    Store owner replied: Hello Shannon. We appreciate you taking the time to report these findings so we can share them with our growers in hopes of preventing such occurrences moving forward. We strive to ensure the quality of our products and can share in your frustrations, as we wish for all customers to be satisfied with their purchase. After speaking with our Customer Service Team, it seems we were able to resolve this for you. Thanks for your time in sharing your experience with us!

    I am growing other double click cosmos, pink and magenta. I was really looking forward to these ones, but sadly none have grown.

    Cosmos Seeds - Double Click White Knight

    Store owner replied: Hello, Emily Thank you for your review of Eden Brothers! After speaking with our Customer Service Team, it seems we were able to resolve this for you. We greatly appreciate you bringing this to our attention as we strive to provide the best quality service and products to our gardeners around the country.

    Experienced grower. None germinated.

    Cosmos Seeds - Double Click White Knight

    Store owner replied: Hello, Lauren Thank you for your review of Eden Brothers! After speaking with our Customer Service Team, it seems we were able to resolve this for you. We greatly appreciate you bringing this to our attention as we strive to provide the best quality service and products to our gardeners around the country.

    Zero germination. Tried direct sowing, paper towel method and indoor sowing with grow light and heat mat nothing showed up.

    Cosmos Seeds - Double Click White Knight

    Store owner replied: Hello, Tia Thank you for your review of Eden Brothers! We greatly appreciate you bringing this to our attention. It's so important to have feedback like this so we can continually improve our products and processes. After speaking with our Customer Service Team, it seems we were able to resolve this for you. Thanks for your time in sharing your experience with us!

    I have grown many cosmos from seed. I tried these twice & did not get one plant. It’s too bad. The flowers in the photo would be beautiful in any garden. I wonder if Eden Brothers refunds money on seeds that so many people say did not germinate.

    Cosmos Seeds - Double Click White Knight

    Store owner replied: Hello, Tracey Thank you for your review of Eden Brothers! After speaking with our Customer Service Team, it seems we were able to resolve this for you. We greatly appreciate you bringing this to our attention as we strive to provide the best quality service and products to our gardeners around the country.

    I ordered several packs of different seeds and these were the ones I was most excited about, but didn't get a single one to germinate.

    Cosmos Seeds - Double Click White Knight

    Store owner replied: Hello, Kristen 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!

    I was very excited to receive these seeds in the mail. But to my dismay none of them germinated. Very sad.

    Cosmos Seeds - Double Click White Knight

    Store owner replied: Hello, Faith Thank you for your review of Eden Brothers! After speaking with our Customer Service Team, it seems we were able to resolve this for you. We greatly appreciate you bringing this to our attention as we strive to provide the best quality service and products to our gardeners around the country.

    Like others have said, not a single one of these seeds germinated. Sad, because they are a gorgeous flower.

    Cosmos Seeds - Double Click White Knight

    Store owner replied: Hello, Emily 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!

    I purchased a few cosmo varieties' seeds from Eden Brothers, and the other was fine, but not a single seed germinated from the double clicks. Reading the reviews, it seems like I am far from the only one with this issue. Disappointed.

    Cosmos Seeds - Double Click White Knight

    Store owner replied: Hello, Whitney 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!

    Like the other reviewers from last year and this year, this one is not germinating! Eden Bros was great when I called and refunded the seeds. I was going to repurchase and try again, but now I'm not so sure as others are also writing that this one is not germinating.

    Cosmos Seeds - Double Click White Knight

    Store owner replied: Hello, Catie Thank you for your review of Eden Brothers! After speaking with our Customer Service Team, it seems we were able to resolve this for you. We greatly appreciate you bringing this to our attention as we strive to provide the best quality service and products to our gardeners around the country.

    I have ordered a lot of different varieties of cosmos. All of them having about a 99% germination rate! For some reason I cannot for the life of me get these to germinate. Out of an entire packet I was finally able to get one to germinate. So fingers crossed it stays alive to flower for me.

    Cosmos Seeds - Double Click White Knight

    Store owner replied: Hello, Amy Thank you for relaying your experience with these Cosmos! Our apologies they did not produce well for you this season. We have relayed this to our growers and appreciate your information! We're happy to have given a form of resolution to you. Feel free to reach out with any other issues and we'll be happy to help!

    Out of all the flowers I ordered from Eden Brothers this is the only one that had poor germination unfortunately. Only have a couple sprouts compared to the other Cosmos & other flowers I ordered which every cell in my starter tray has fully germinated. Sad because these look beautiful in the pics.

    Cosmos Seeds - Double Click White Knight

    Store owner replied: Hello, Drew Thanks so much for your reply! We greatly appreciate your feedback on this matter. We're always looking for ways to improve our products and service and will certainly take your information into account. If you ever have any other concerns or questions, feel free to reach out to us and we'll be happy to do all we can to assist. Thanks again for your review and best wishes for your growing season!

    I ordered several different seed packets from Eden Bros, and unfortunately none of this variety germinated. Very disappointed. The other varieties (zinnias, some sunflowers, calendula and a different type of cosmos) germinated and seem to be growing well.

    Cosmos Seeds - Double Click White Knight

    Store owner replied: Hello, Heidi Thank you for your review of Eden Brothers! We greatly appreciate you bringing this to our attention. It's so important to have feedback like this so we can continually improve our products and processes. After speaking with our Customer Service Team, it seems we were able to resolve this for you. Thanks for your time in sharing your experience with us!

    Companion Plants

    1 of 3