Customer Service Hours
Mon-Fri 8-4 MST
Features
Family
Asteraceae
Native
North America
Life Cycle
Annual
Plant Height
Tall (Greater than 24")
Flower Color
Red
Bloom Season
Summer to frost
Further Information
Plant Characteristics
- Attracts Pollinators
- Cut Flower
Growing Conditions
- Drought Tolerant
- Heat Tolerant
About Rouge Royale Sunflower Seeds
Helianthus annuus (hybrid)
3"–6" deep red flowers
Planting Sunflower
Plant Spacing
A group of 3 seeds every 18"–24"
Light Required
Full sun
Plant Height
Tall (Greater than 24")
Planting Depth
¼"–½"
Planting Details
| Seed Depth | ¼"–½" |
|---|---|
| Seed Spacing | A group of 3 seeds every 18"–24" |
| Thinning | When 3" tall, thin to 1 every 18"–24" |
| Germination | 10–15 days |
| Start Indoors | 2 to 4 weeks before your average last frost date. Sunflowers are senstive to root disturbance; sow in biodegradable pots that can be planted directly in the ground. |
| Direct Sow | RECOMMENDED. 1 to 2 weeks after your average last frost date. |
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
Total 5 star reviews: 20 Total 4 star reviews: 4 Total 3 star reviews: 0 Total 2 star reviews: 1 Total 1 star reviews: 0
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Rating
Which best describes you as a gardener?
25 reviews
- MaureenRated 5 out of 5 stars10/16/25So pretty 🤩
These were gorgeous! I mixed these in with some other sunflower varieties and put them around our chicken coop to give the girls some shade.. and a snack when they go to seed. I almost missed them when they were first in bloom because they were so dark! Will play again!
Which best describes you as a gardener? IntermediateBIBotanical Interests10/18/25Hey Maureen,
Thank you so much for this fantastic 5-star review! "So pretty" and "gorgeous" is exactly what we love to hear about Rouge Royale Sunflower Seeds - and we absolutely love how you almost missed them because they were so beautifully dark when they first bloomed!
We absolutely love that you created such a perfect setup around your chicken coop - mixing these stunning dark beauties with other sunflower varieties for shade and future snacks for the girls is such brilliant garden planning! There's something so satisfying about growing flowers that serve multiple purposes while looking absolutely gorgeous.
Your chicken coop sunflower garden and multi-variety mixing success will be so inspiring for other gardeners who want to discover just how rewarding and striking Rouge Royale Sunflower Seeds can be for creating functional beauty that benefits both the garden and the backyard flock!
Keep on growing 🌻️
- Samantha S.Verified BuyerRated 5 out of 5 stars9/30/25The best sunflowers
I have never seen such beautiful, fast growing sunflowers. Took 2 months from seed to bloom, and every seed germinated. Plants are 6-7 feet tall with at least 10 blooms per plant, and more come after previous flowers are cut. Will plant these again and again!
Which best describes you as a gardener? BeginnerBIBotanical Interests9/30/25Hey Samantha S.,
We're stoked to hear that your Rouge Royale Sunflower Seeds delivered such spectacular results - 6-7 feet tall with at least 10 blooms per plant is just phenomenal! We'd love to see photos if you can send them.
Your success with these fast-growing, prolific bloomers will be so inspiring for other gardeners who want sunflowers that deliver both impressive height and incredible flower production. Rouge Royale really knows how to put on a show!
Keep on growing 🌻️
- LainieVerified ReviewerRated 2 out of 5 stars7/18/25Mine are black.
I’ve been waiting and waiting for these to open! First bloom finally happened this morning. It’s definitely not “true red” —it’s black. Giving two stars because the seeds all germinated and the plants are six feet tall.
Which best describes you as a gardener? IntermediateBIBotanical Interests7/24/25Hey Lainie,
Thank you so much for taking the time to share your thoughts in a review. A flower might not bloom in the color you were expecting for several natural reasons, and it doesn’t necessarily mean something is wrong. Soil conditions can play a role; certain flowers, like hydrangeas, change color based on soil pH and mineral content. Weather and temperature fluctuations, such as heatwaves or cold snaps, can impact pigment development and lead to muted or altered flower colors. Your feedback is invaluable to us, and we are committed to ensuring your experience is positive. Please don't hesitate to reach out to our customer service team with any questions. Thank you once again for your input. Keep on growing 🌻️
- Melody P.CA, United StatesVerified ReviewerRated 5 out of 5 stars6/28/25Gorgeous! Zone 10b
Very pretty dark red flowers are striking in the garden. Some branching as well for prolonged beauty. I grow this every year!
Which best describes you as a gardener? IntermediateWho do you grow for? YourselfHow do you prefer to grow? Raised BedBIBotanical Interests6/30/25Hey Melody,
We're so happy to hear your Rouge Royale Sunflowers are putting on such a stunning show year after year. Those dark red blooms really are striking - they make such a bold statement in any garden! And the branching is such a wonderful bonus for extended color and beauty throughout the season. It sounds like you've found a true favorite that keeps delivering. Here's to another gorgeous year of those dramatic red sunflowers! Keep on growing 🌻
- Rachel P.Rated 4 out of 5 stars4/19/254 Stars
I have great success with most of the seed I have gotten from botanical interest. These sunflowers are no exception. However, my flower seems to be much darker. I don't know if something is off in the soil (like hydrangeas need acidic for purple and pinks) or if it will redden as it grows. 🤔 I am container gardening them and wish I had put them in a bigger grow bag. But that was my mistake.
BIBotanical Interests4/29/25Hey Rachel,
Thank you so much for sharing your photo. 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 🌻️