Customer Service Hours
Mon-Fri 8-4 MST
Features
Family
Asteraceae
Native
North America
Life Cycle
Perennial
Plant Height
Tall (Greater than 24")
Flower Color
Yellow
Bloom Season
Summer to frost
Further Information
Plant Characteristics
- Attracts Pollinators
- Cut Flower
Growing Conditions
- Drought Tolerant
- Heat Tolerant
Plant Resistance
Deer Resistant
About Double Sunburst Coreopsis Seeds
Coreopsis lanceolata
2"– semi-double and double yellow flowers on 18"–24" slender, wiry stems
Planting Coreopsis
Plant Spacing
A group of 3 seeds every 12"
Hardiness Zones
4, 5, 6, 7, 8, 9
Light Required
Full sun
Plant Height
Tall (Greater than 24")
Planting Depth
Press into surface
Planting Details
| Seed Depth | Press into surface |
|---|---|
| Seed Spacing | A group of 3 seeds every 12" |
| Thinning | When 1" tall, thin to 1 every 12" |
| Germination | 5–10 days |
| Start Indoors | 6 to 8 weeks before your average last frost date. |
| Direct Sow | 1 to 2 weeks before your average last frost date, or as late as 8 weeks before your average first 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: 14 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
14 reviews
- mercedesVerified BuyerRated 5 out of 5 stars2/14/26beautiful and germinated 100%
these are very beautiful flowers, germinated all of the seeds
Which best describes you as a gardener? BeginnerBIBotanical Interests2/16/26Hey Mercedes,
That's absolutely wonderful to hear about your Double Sunburst Coreopsis Seeds! A 100% germination rate is fantastic! The Double Sunburst variety really does put on quite a show with those gorgeous blooms, and we're so glad you chose our seeds for your garden. Thank you for choosing us and for sharing your growing success with us. Keep on growing 🌻️
- Douglas D.Verified BuyerRated 5 out of 5 stars9/27/25Sunburst Coreopsis
Excellent germination, all plants doing well.
Which best describes you as a gardener? IntermediateBIBotanical Interests9/29/25Hey Douglas D.,
What a fantastic review! We're absolutely thrilled to hear that your Double Sunburst Coreopsis Seeds delivered such excellent germination and that all your plants are thriving!
There's nothing more exciting than seeing those first coreopsis seedlings emerge and knowing you're going to have a garden full of those gorgeous, bright blooms! Double Sunburst coreopsis are such reliable performers once they get established, and with that kind of strong start from germination, you're setting yourself up for months of beautiful, sunny flowers.
The fact that ALL your plants are doing well really shows what healthy, viable seeds can accomplish when they hit good growing conditions. Strong germination is everything when it comes to getting a spectacular flower display, and it sounds like your Double Sunburst coreopsis are going to deliver exactly that cheerful burst of color that makes this variety so special.
Your success with these hardy, long-blooming beauties will be so encouraging for other gardeners who want reliable, low-maintenance flowers that keep performing all season long!
Keep on growing 🌻️
- Sue S.Verified BuyerRated 5 out of 5 stars2/5/255 Stars
I live on alvar land in the summer (very thin layer of alkaline soil over the limestone bedrock). A reseeding coreopsis is one of the few things that grows well here. Also, the columbines, nigella, and verbascum (zone 4-5). In the winter I go to zone 7B Maryland and can plant anything in the acidic, sandy loam. I love the instructional packaging.
- Brandon P.Rated 5 out of 5 stars11/20/245 Stars
This was really fun to grow! I am in zone 10 here in Hawaii. We get day time temps of mid 80’s and night time temps of mid 60’s. I started the seeds in April and now they are starting to bloom. I’m excited to start more seeds and plant them all over my garden.
Which best describes you as a gardener? Intermediate - Joanne J.Verified BuyerRated 5 out of 5 stars11/16/245 Stars
great variety
Which best describes you as a gardener? Intermediate