Customer Service Hours
Mon-Fri 8-4 MST
Features
Family
Asteraceae
Native
Mexico and Central America
Life Cycle
Annual
Plant Height
Tall (Greater than 24")
Flower Color
Mixed
Bloom Season
Summer to frost
Further Information
Plant Characteristics
- Attracts Pollinators
- Cut Flower
- Edible Flower
About Dahlia
Dahlia pinnata
5"—6" diameter blooms in varying shades of red, yellow, peach and white with yellow centers
Planting Dahlia
Plant Spacing
3 seeds every 18" to 24"
Light Required
Full Sun
Plant Height
Tall (Greater than 24")
Planting Depth
1/4''
Planting Details
| Seed Depth | 1/4'' |
|---|---|
| Seed Spacing | 3 seeds every 18" to 24" |
| Thinning | When 2 sets of leaves, thin to 1 every 18" to 24" |
| Germination | 5–20 Days |
| Start Indoors | RECOMMENDED. 8 to 10 weeks before your average last frost date. Ideal soil temperature for germination is 65°–70°F. Sow in biodegradable pots; roots are sensitive to disturbance. |
| Direct Sow | 2 to 4 weeks after your average last frost date. |
| Growing & Harvesting | For longest vase life, harvest flowers in the morning and choose flowers with just the outer 2-3 layers of petals 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
Total 5 star reviews: 11 Total 4 star reviews: 0 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?
12 reviews
- Ammie C.GA, United StatesVerified BuyerRated 5 out of 5 stars2/24/26Great Germination
I love growing dahlias from seed, and these seeds germinated promptly under indoor grow lights.
Which best describes you as a gardener? BeginnerWho do you grow for? FamiliesHow do you prefer to grow? Raised Bed - Wendy F.Verified BuyerRated 5 out of 5 stars2/10/26Germination after 3 days!
This morning (Tuesday), I noticed several broad leaves on the dahlias in my trays, which I planted on Friday. I've never grown dahlias before, so this is exciting!
Which best describes you as a gardener? IntermediateBIBotanical Interests2/16/26Hey Wendy,
That's absolutely amazing - germination in just 3 days! Your Cactus Flowered Blend Dahlia Seeds are off to such a fantastic start, and we're so excited that you're diving into the wonderful world of dahlias for the first time! There's something truly magical about watching those first broad leaves emerge, and it sounds like you're going to have some beautiful blooms to look forward to. We can't wait to see how your dahlia adventure unfolds - these cactus flowered varieties are going to put on quite the show for you! Thank you for choosing us and for sharing your growing excitement with us. Keep on growing 🌻️
- Beth C.Verified BuyerRated 2 out of 5 stars8/9/25Poor germination
I germinated 2 packets of these next to the other dahlia blend that Botanical Interests sells. The non-cactus germinated fantastically, but these cactus flowered seeds had a 20% germination rate if even. Botanical Interests even checked the batch and said there had been no problems with it. Replacement packet performed the same.
Which best describes you as a gardener? IntermediateBIBotanical Interests8/12/25Hey Beth,
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 🌻️
- William M.Rated 5 out of 5 stars10/10/245 Stars
The Dahlias are proficient, beautiful, easy to grow, and, most importantly, bee magnets!!!!
Which best describes you as a gardener? Expert - Chris L.Verified BuyerRated 5 out of 5 stars4/9/245 Stars
Totally satisfied with my purchases. A quality product from a first rate company. Thank you.
Which best describes you as a gardener? Beginner