Customer Service Hours
Mon-Fri 8-4 MST
Features
Family
Asteraceae
Native
Europe and Asia
Life Cycle
Annual
Plant Height
Tall (Greater than 24")
Flower Color
Blue
Bloom Season
Summer
Further Information
Plant Characteristics
- Attracts Pollinators
- Cut Flower
- Edible Flower
Growing Conditions
Drought Tolerant
Plant Resistance
Deer Resistant
About Blue Boy Bachelor's Button Seeds
Centaurea cyanus
½"–1" wide, sky blue flowers
Planting Bachelor's Button
Plant Spacing
A group of 3 seeds every 8"–10"
Light Required
Full sun
Plant Height
Tall (Greater than 24")
Planting Depth
¼"
Planting Details
| Seed Depth | ¼" |
|---|---|
| Seed Spacing | A group of 3 seeds every 8"–10" |
| Thinning | When 1"–2" tall, thin to 1 every 8"–10" |
| Germination | 7–14 days |
| Start Indoors | 4 to 6 weeks before your average last frost date. Not recommended; does not transplant well. Use biodegradable pots to avoid root disturbance. |
| Direct Sow | RECOMMENDED. 1 to 2 weeks before your average last frost date, or in late summer/fall for blooms the following season. Mild Climates: Sow in fall for winter bloom. |
| Special Sowing | For optimum germination, chill seed in the refrigerator for 5 days before sowing. |
| Growing & Harvesting | For longest vase life harvest in the morning and choose buds that are about half open. |
Find Your Frost Date & Grow Zone
Average First Frost Date
October 19
Average Last Frost Date
May 19
Your Hardiness Zone is
5b
Send Your Recommendation
Slide 1 selected
Search
Rating
Which best describes you as a gardener?
30 reviews
- Robert P.Verified BuyerRated 5 out of 5 stars9/8/26Good Spring 2026
These did well in my garden this year. I expect great results from them next year.
Which best describes you as a gardener? IntermediateBIBotanical Interests9/9/26Hey Robert,
We're so happy to hear that your Blue Boy Bachelor's Button Seeds did well in your garden this spring! It's awesome that you're already looking forward to planting them again next year! Thanks so much for being part of the growing community! Keep on growing 🌻
- JESSERated 5 out of 5 stars7/16/265 Stars
Just got my seeds. Can't wait to plant them!
- Nancy G. M.MN, United StatesVerified BuyerRated 2 out of 5 stars7/8/26No blooms yet for Blue Boy Bachelor Buttons
Not sure why but I planted seeds over a month ago and still no blooms. Maybe my fault who knows but pretty disappointed.
Who do you grow for? YourselfHow do you prefer to grow? In GroundBIBotanical Interests7/17/26Hey Nancy
Thank you so much for taking the time to share your thoughts in a review. I've reached out to you via email to offer assistance. Your feedback is invaluable to us, and we are committed to ensuring your experience is positive. Thank you once again for your input. Keep on growing 🌻️
- Aliyah J.Verified BuyerRated 5 out of 5 stars6/5/26Super good germination!
All of my flowers are lovely!
BIBotanical Interests6/13/26Hey Aliyah,
We're thrilled to hear about the super good germination you're getting with our Blue Boy Bachelor's Button Seeds! It sounds like your flowers are turning out absolutely lovely. There's nothing quite like those beautiful blue blooms to brighten up the garden! Thanks for sharing your Blue Boy bachelor's button success with us! Keep on growing 🌻️
- Staci B.Verified BuyerRated 5 out of 5 stars11/20/25Botanical interest never disappoints!
As with every seed order I receive from botanical interests I’m always amazed at how well the seeds germinate- so much better than the majority of other seed companies.
Which best describes you as a gardener? IntermediateBIBotanical Interests11/24/25Hey Staci,
It's wonderful to know that you keep coming back to us because of the quality and reliability you've come to expect. Your loyalty and trust in our seeds means the world to us! Keep on growing 🌻️