Customer Service Hours
Mon-Fri 8-4 MST
Features
Family
Solanaceae, Nightshade family, includes tomatoes, potatoes, petunias, nicotiana, Chinese lantern, and eggplant.
Native
Chile
Life Cycle
Annual
Plant Height
Tall (Greater than 24")
Flower Color
Blue
Bloom Season
Summer
Further Information
Plant Characteristics
- Attracts Hummingbirds
- Attracts Pollinators
- Cut Flower
- Good for Containers
About Kew Blue Salpiglossis Seeds
Salpiglossis sinuata
2" deep blue-purple flowers with dark central blotches.
Planting More Flowers
Plant Spacing
A group of 3 seeds every 12"
Light Required
Full sun. Afternoon shade is beneficial in warm climates.
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 2" tall, thin to 1 every 12" |
| Germination | 12 – 30 days |
| Start Indoors | RECOMMENDED. 8 to 10 weeks before your average last frost date. |
| Direct Sow | 1 to 2 weeks before your average last frost date. Mild Climates: Sow in late summer or fall for cool-season blooms. |
| Special Sowing | Darkness aids germination. Press seed into soil surface and cover with something opaque to completely exclude light. When seedlings emerge, remove cover. |
| Special Care | Pinch back tips once plants have at least 4 sets of leaves to encourage branching, which will create a sturdier plant. Staking may be necessary. Deadhead (remove spent blossoms) regularly for continued production. |
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: 3 Total 4 star reviews: 1 Total 3 star reviews: 3 Total 2 star reviews: 0 Total 1 star reviews: 1
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Rating
Which best describes you as a gardener?
8 reviews
- Lynn W.Verified BuyerRated 3 out of 5 stars6/8/26Kew "Not Blue" Salpiglossis
Despite some saying germination was difficult I had not problems and germ rates were good. Plants were started in a hydroponics unit and came up quickly. Also grew quickly and trying to bloom before I even moved out of the unit. Flowers are most definitely not blue, but purple and remind me of a petunia with a deeper throat. Wondering if they might draw hummers once outside? I definitely feel the depicted drawing varies quite a bit from the actual flower colors, so be aware of that. But, if you are looking for a bright purplish petunia like flower that's reportedly drought resistant, this might be a good fit. No issues with the plant, germination or growth, just would prefer a bit more accurate depiction.
Which best describes you as a gardener? ExpertBIBotanical Interests6/10/26Hey Lynn,
Thank you so much for taking the time to share your detailed experience with the Kew Blue Salpiglossis Seeds! It's wonderful to hear that you had such great success with germination and growth - especially when others have found it challenging. Your hydroponic setup sounds like it really gave them the perfect start!
I really appreciate your honest feedback about the flower color. You're absolutely right that they lean more toward that beautiful purple shade rather than true blue, and I can see how the name might set different expectations. Your comparison to petunias with deeper throats is spot on - they really do have that lovely, rich coloring!
And yes, you might just attract some hummingbirds once they're established outside! Their tubular shape and vibrant color can definitely catch their attention.
Thank you for that thoughtful heads-up about the color variation for fellow gardeners - that kind of real-world insight is incredibly helpful for others considering these seeds. It sounds like you've got some beautiful, healthy plants that will bring lots of color to your garden!
Keep on growing 🌻️
- Susan I.CA, United StatesVerified BuyerRated 3 out of 5 stars5/2/26Beautiful but …
I planted these little guys hoping for a pop of color. I planted them in April and I think only 1 is coming up. It could be me (probably is) but only 1 out of an entire seed pack? I’m bummed but I’m not going to give up.
Which best describes you as a gardener? BeginnerWho do you grow for? YourselfHow do you prefer to grow? Raised BedBIBotanical Interests5/8/26Hey Susan,
Thank you so much for taking the time to share your experience with the Kew Blue Salpiglossis Seeds! I really appreciate your honest feedback, and I can totally understand your disappointment with the germination rate you experienced.
We're not sure when you planted this in April but germination can take anywhere from 12 – 30 days. Please don't give up on them yet.
Your persistence and willingness to keep trying shows what a dedicated gardener you are. Sometimes these finicky flowers just need us to figure out their preferences. Thanks for sharing your experience - it helps other gardeners know what to expect. Keep on growing 🌻️
- Valerie D.CO, United StatesVerified BuyerRated 5 out of 5 stars9/19/25Kew Blue
Record time delivery and great customer service. Epic is my go too. The best seeds ever.
Which best describes you as a gardener? BeginnerWho do you grow for? YourselfHow do you prefer to grow? Container - Saskia M.Verified BuyerRated 5 out of 5 stars9/1/245 Stars
Watch the channel nightly on YouTube. Learn so much. Also appreciate that you and Jacque have fun with it, laugh at yourselves, and aren’t perfect in the garden. Big fan. Thank you.
Which best describes you as a gardener? Intermediate - Kim M.Verified BuyerRated 4 out of 5 stars3/30/244 Stars
Lots of seedlings. I'm hopeful.
Which best describes you as a gardener? Intermediate