Customer Service Hours
Mon-Fri 8-4 MST
Features
Family
Asteraceae
Native
Mexico
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
- Good for Containers
Growing Conditions
- Frost Sensitive
- Heat Tolerant
Plant Resistance
Deer Resistant
About California Giants Blend Zinnia Seeds
Zinnia elegans
Large, 4"–6" flowers in red, pink, purple, and white.
Planting Zinnia
Plant Spacing
A group of 3 seeds every 12"
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 12" |
| Thinning | When 2" tall, thin to 1 every 12" |
| Germination | 3–10 days |
| Start Indoors | 4 to 6 weeks before your average last frost date. Transplant outdoors after last frost. Zinnias do not benefit from being sown early; wait for warmer weather |
| Direct Sow | RECOMMENDED. 1 to 2 weeks after your average last frost date. |
| Growing & Harvesting | For longest vase life, harvest before small yellow flowers emerge between petals. Change vase water often. |
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: 57 Total 4 star reviews: 3 Total 3 star reviews: 1 Total 2 star reviews: 1 Total 1 star reviews: 1
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Rating
Which best describes you as a gardener?
63 reviews
- Patricia O.Verified BuyerRated 5 out of 5 stars4/26/26Waiting…
Seeds are growing nicely inside, but I have to wait to plant outside since it’s been a cold spring here in the northeast. That said, I look forward to seeing how beautifully the zinnias turn out again. Last year, I had a gorgeous crop! Gave a few bouquets to friends and neighbors. 🌺
Which best describes you as a gardener? IntermediateBIBotanical Interests5/8/26Hey Patricia,
We love that your California Giants Blend Zinnia Seeds are growing nicely inside while you wait for it to warm up! What a smart move starting them indoors! We're so excited to hear about last year's gorgeous crop and how you spread the zinnia joy with bouquets for friends and neighbors! We can't wait for you to experience another amazing season with these beauties! Thanks for sharing your growing journey with us! Keep on growing 🌻️
- MercedesVerified BuyerRated 5 out of 5 stars4/23/26Stunning!
Last year I bought these seeds from Botanical Interests. I planted them in my south facing front yard which received full sun. These are very gorgeous GIANT flowers. Zinnias grew up to 4 feet, and the Zinnias loved full sun, different colors in the rainbow. Germinated 100%
Which best describes you as a gardener? BeginnerBIBotanical Interests5/3/26Hey Mercedes,
We love to hear your California Giants Blend Zinnias are so stunning! Four-foot tall giants with 100% germination and a full rainbow of gorgeous colors - that's exactly what we love to hear! There's nothing quite like seeing those massive, vibrant blooms towering in your front yard and putting on such a spectacular show all season long. It sounds like your south-facing spot with full sun was the perfect home for these beauties! Thank you so much for choosing our seeds and for sharing your amazing experience with these fantastic zinnias! Keep on growing 🌻️
- Arlene B.Verified BuyerRated 5 out of 5 stars4/3/26Retired gardener
Beautiful plants.
Which best describes you as a gardener? BeginnerBIBotanical Interests4/4/26Hey Arlene,
We're so happy to hear you're loving your California Giants Blend Zinnia Seeds! There's something so special about these beautiful, vibrant blooms - they really know how to put on a show in the garden! It's wonderful that you're still enjoying gardening in retirement, and zinnias are such a perfect choice for creating those stunning displays. Keep on growing 🌻️
- Kim C.Verified BuyerRated 5 out of 5 stars2/18/26Just sowed inside.
They look robust
Which best describes you as a gardener? IntermediateBIBotanical Interests2/20/26Hey Kim,
That's fantastic! We're so excited to hear your California Giants Blend Zinnia Seeds are looking robust already! We can't wait for you to see these gorgeous zinnias in full bloom with their vibrant colors and impressive size. Thank you for choosing us and for sharing this wonderful update with us. Keep on growing 🌻️
- mercedesVerified BuyerRated 5 out of 5 stars2/14/26beautiful
these are beautiful blend. great germination
Which best describes you as a gardener? BeginnerBIBotanical Interests2/16/26Hey Mercedes,
Thank you so much for your wonderful review of our California Giants Blend Zinnia Seeds! We love to hear that you're loving the beautiful blend and that you're seeing such great germination rates! Zinnias are such stunning flowers, and this blend really does create an amazing display once they get going. We're so glad you chose our seeds for your garden and we can't wait to see how gorgeous your blooms turn out! Thank you for choosing us and for sharing your growing success with us. Keep on growing 🌻️