Customer Service Hours
Mon-Fri 8-4 MST
Features
Family
Convolvulaceae
Native
Only in cultivation
Life Cycle
Annual
Plant Height
Vine
Flower Color
Red
Bloom Season
Summer to frost
Further Information
Plant Characteristics
- Attracts Hummingbirds
- Attracts Pollinators
- Good for Containers
Plant Resistance
Deer Resistant
About Cardinal Climber Seeds
Ipomoea sloteri
¾" wide, red, tubular flowers
Planting Vine
Plant Spacing
A group of 3 seeds every 6"–12"
Hardiness Zones
11, 12
Light Required
Full sun
Plant Height
Vine
Planting Depth
1/2"
Planting Details
| Seed Depth | 1/2" |
|---|---|
| Seed Spacing | A group of 3 seeds every 6"–12" |
| Thinning | When 2" tall, thin to 1 every 6"–12" |
| Germination | 5–15 days |
| Start Indoors | 4 to 6 weeks before transplanting outside. Sow into a biodegradable pot that can be directly planted in the ground to avoid disturbing roots. |
| Direct Sow | RECOMMENDED. 1 to 2 weeks after your average last frost date. Plants started too early outside will end up less vigorous than plants started when warmer. |
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: 10 Total 4 star reviews: 3 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 1
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Rating
Which best describes you as a gardener?
14 reviews
- Luanne S.Verified BuyerRated 5 out of 5 stars11/11/25Pollinator Magnet
Hummingbirds, bees, butterflies LOVE this plant
Which best describes you as a gardener? IntermediateBIBotanical Interests11/12/25Hey Luanne,
Thank you so much for this fantastic 5-star review! "Pollinator Magnet" is exactly what we love to hear about Cardinal Climber Seeds - and we absolutely love that you've discovered just how irresistible these stunning red trumpet flowers are to hummingbirds, bees, and butterflies!
That's exactly the kind of wildlife-attracting success that makes Cardinal Climbers such garden treasures! There's nothing quite like watching those vibrant scarlet blooms climbing up trellises and fences while creating such a buzzing, fluttering paradise that brings hummingbirds zipping in for nectar, bees working those trumpet-shaped flowers, and butterflies dancing around that gorgeous red display!
Your pollinator magnet experience will be so inspiring for other gardeners who want to discover just how well Cardinal Climber Seeds can transform any vertical space into a wildlife haven that supports local pollinators while creating that spectacular climbing display of bright red flowers that keeps the garden alive with beneficial visitors all season long!
Keep on growing 🌻️
- StephanieRated 5 out of 5 stars9/23/25Late Bloomer
These grew very well for me- full sun, zone 7a. They did not begin to bloom until late August, and they are beautiful right now, about a month later. I also planted some hyacinth beans along the trellis, so the green was not so prelevent. Now i know what to expect for next year!
Which best describes you as a gardener? IntermediateBIBotanical Interests9/24/25Hey Stephanie,
What a fantastic review! We're absolutely thrilled to hear that your Cardinal Climber Seeds grew so well for you in zone 7a - that's exactly what we love to hear!
Your experience with the late August blooming is so perfectly typical for Cardinal Climbers! These beautiful vines are definitely worth the wait because they're all about building up that strong, lush foliage first before putting on their incredible flower show. It's like they spend all that time getting ready to absolutely dazzle you once they decide it's time to bloom! And wow, late summer into fall is when they really shine with those gorgeous star-shaped red flowers.
We love your smart thinking with the hyacinth beans! That's such a clever companion planting strategy - getting that extra visual interest and variety along your trellis while the Cardinal Climbers were in their leafy phase. It sounds like you created a really beautiful mixed display that gave you something lovely to look at through the whole growing season.
Your "now I know what to expect for next year" comment is so perfect! That's exactly the kind of garden wisdom that makes each growing season better than the last. Next year you'll be able to plan around their timing and maybe even enjoy that anticipation of waiting for the big bloom show to begin.
Cardinal Climbers are such rewarding growers once you understand their rhythm, and it sounds like you've got them figured out perfectly!
Keep on growing 🌻️
- Linda G.Verified BuyerRated 5 out of 5 stars11/26/245 Stars
I have 2 greenhouses and have purchased seeds for the first time from this company. Quality is great, price is right, shipped quickly, and every seed sprouted and thrived in the greenhouses.
- Loretta S.Verified BuyerRated 5 out of 5 stars8/5/245 Stars
Carsinal Vine is growing well but still have no flowers on it.
- Nancy D.Verified BuyerRated 4 out of 5 stars7/27/244 Stars
They are reliable. I enjoy the feathery leaves and sporadic blossoms