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Few garden sights match the layered pompom petals of a double-bloom clematis. Unlike single-flowered varieties, these hybrid beauties pack multiple whorls of petals into each flower head, creating a textured, rose-like display that keeps the trellis exciting from late spring through the first frost. The trick is finding a starter plant that matures into that promised show without fading into a single-flowered imposter.
I’m Mohammad Maruf — the founder and writer behind Gardening Beyond. I’ve spent years analyzing clematis grower data, matching hardiness zone claims to real customer outcomes, and comparing vine genetics across top nurseries to separate robust blooming stock from underwhelming seedlings.
This guide breaks down five proven clematis plants by their real-world performance, training you to read past the marketing label and choose a double bloom clematis that will reward your trellis for years.
How To Choose The Best Double Bloom Clematis
A double-bloom clematis is biologically different from a standard single-petal vine. Many hybrids that produce double flowers are sterile — they invest all energy into petal production rather than seed. That sounds good, but it makes the plant more dependent on strong roots and proper pruning. You need to verify four things before buying.
Confirm the Pruning Group
Most double clematis belong to Pruning Group 2. That means they bloom on old wood in spring and new wood in late summer. If you prune them hard like Group 3 varieties (Jackmanii, Sweet Autumn), you lose the early double flush. Always look for Group 2 in the listing or plant tag. If the seller doesn’t list it, ask or move on.
Inspect the Root System at Arrival
A double bloom clematis starter should show multiple vines emerging from a dense root crown — not a single thin stem. When you open the pot, look for at least 3-4 basal shoots. One-stick plants rarely develop into full, bushy bloomers because the root mass is too small to support continuous petal production.
Check the Expected Bloom Period Length
True double-bloom cultivars rebloom through the season, not just for a single flush. Look for varieties advertised as “everblooming” or “continuous” from late spring to early fall. A plant that only blooms once in June is likely a mislabeled single-flower hybrid.
Quick Comparison
On smaller screens, swipe sideways to see the full table.
| Model | Category | Best For | Key Spec | Amazon |
|---|---|---|---|---|
| Raymond Evison Clematis Giselle | Premium 8″ Container | Patio pots & compact trellises | 4‑5 ft mature height | Amazon |
| Clematis jackmanii ‘Superba’ | Mid-Range Container | Deep purple summer walls | USDA Zone 3 hardy, 10 ft height | Amazon |
| Boulevard Tranquilite Hybrid | Compact Mid-Range | Small gardens & balconies | 4‑5 ft height, pale lavender | Amazon |
| YOKEBOM Purple Clematis Vine | Budget 2.5″ Pot | Budget-friendly trial plant | 2.5″ pot, fragrant, heirloom | Amazon |
| Clematis Variety Pack (3 plants) | Multi-Pack Budget | Trying 3 cultivars at once | Grower’s choice, 2″ pots each | Amazon |
In‑Depth Reviews
1. Raymond Evison Clematis Giselle (Green Promise Farms)
This is the most reliable starter plant in the list for achieving true double-bloom form. The Raymond Evison breeding line is specifically known for producing sterile double flowers — the plant pours energy into layered petals rather than seed heads. At 4-5 feet mature height, it is a true compact climber perfect for a patio obelisk or a mixed container. The 8-inch container delivers a fully rooted crown with multiple vines ready to climb the first season.
Customer reports consistently describe a vigorous second-year return after transplanting, with flowers attracting bees and buds appearing by early summer. The size of the root system at delivery is the key differentiator — buyers who received a standard 4-inch pot size complain it was undersized, but when the 8-inch container arrives as advertised, the plant establishes noticeably faster than smaller pot competitors.
One buyer noted it bloomed in its first year and then doubled its size the following spring. This matches the expected behavior of a Pruning Group 2 clematis: flowers on old wood in May, then a second flush on new growth in August. If you want a guaranteed double performer without gambling on genetics, Giselle is your safest bet.
What works
- True sterile double blooms from established 8″ container
- Compact 4-5 ft height perfect for confined spaces
- Reblooms reliably from spring through fall
What doesn’t
- Some shipments arrive as 4″ pot inside the 8″ container — verify at delivery
- Pink color may appear lighter than promotional photos
2. Green Promise Farms Clematis jackmanii ‘Superba’
The jackmanii “Superba” is not strictly a double-bloom clematis — it produces large single deep purple flowers. But it earns a spot here for two reasons: its dramatic velvety petals create the same visual weight as a double, and its 10-foot ultimate height makes it the best choice for covering entire fence panels or pergola posts. The USDA Zone 3 hardiness rating means it shrugs off winters that kill less hardy hybrids.
Green Promise Farms ships these in a size container advertised as a quart or larger, though several buyers report receiving a small 4-inch pot nested inside the bigger container. When the plant is healthy (which it usually is), growth rates are exceptional — customers describe it doubling in size within weeks and producing spectacular flower displays through July and August. The vine is a Pruning Group 3, so it should be cut back hard in late winter to produce the best show on new wood.
For gardeners who prioritize raw coverage and flower volume over double-petal geometry, this is the better choice. Pair it with a true double-bloom clematis on the same trellis for a multi-texture wall of purple.
What works
- Exceptional hardiness down to Zone 3
- 10 ft height covers large structures quickly
- Flowers extremely heavy and showy in summer
What doesn’t
- Container size can be misleading — often a 4″ pot inside a larger bucket
- Not a true double bloomer — single flowers
3. Perennial Farm Boulevard Tranquilite Hybrid
Boulevard Tranquilite is a cross bred specifically for petite spaces. It tops out at 4-5 feet, making it ideal for a balcony railing, a small container on a patio table, or a low obelisk in a narrow border. The pale lavender blooms lean near-white with soft violet undertones — not the typical shock-purple of Jackmanii varieties. This subtle color palette works beautifully against dark brick or deep green foliage.
Perennial Farm ships these in 4-quart containers that are fully rooted and ready to plant. Multiple buyers confirm the plants arrive in excellent condition with buds already forming. The continuous blooming habit — from late spring to early fall — is a genuine double-bloom trait. Light pruning after the first flush encourages a second wave. The plant is also listed as Pruning Group 2, meaning you only need to remove dead wood in spring, never cut to the ground.
The only real limitation is its size. If you want a massive privacy wall or a climb-to-the-roof vine, this is not your plant. But for anyone building a layered container garden or a front-entry trellis under 6 feet, Tranquilite is the most refined, low-hassle double bloom option available.
What works
- Near-white, soft lavender flowers are calming and refined
- 4-5 ft height fits tight spaces perfectly
- Excellent packaging — plants arrive with buds and blooms intact
What doesn’t
- Mature height limited — not for full fence coverage
- Blooms lighter than promotional photos in some conditions
4. YOKEBOM Purple Clematis Vine Live Plant
YOKEBOM ships a single purple clematis starter in a 2.5-inch pot. At this price point, you are buying a seedling — expect a small, young plant with one or two vines. The key here is that the plant is fragrant and labeled as heirloom, meaning it carries open-pollinated genetics rather than modern sterile hybrids. If you want a true double-bloom clematis, this specific listing does not guarantee double petals. The flower form is simply “purple clematis”.
Customer experiences are split. Many report a healthy arrival with rapid growth and beautiful purple flowers that brighten up a trellis. One buyer described the color as lighter than the picture, with a thin white stripe through the petals — typical of a single-flower clematis variety. For budget-conscious shoppers who simply want a purple vining plant for a low investment, this works. However, if your non-negotiable goal is a double-petal bloomer, you need a named cultivar like Giselle.
Consider this a “starter plant for practice” rather than a guaranteed double-bloom specimen. If you are new to clematis and want to learn its watering and pruning needs before spending on premium genetics, this low-cost entry point makes sense. Just adjust your bloom expectations accordingly.
What works
- Very budget-friendly way to try clematis
- Fragrant flowers add sensory value to the garden
- Heirloom genetics mean strong, adaptable growth
What doesn’t
- No guarantee of double-bloom form — likely single flowers
- Color may not match marketing photo (lighter with stripe)
5. Wekiva Foliage Clematis Variety Pack (3 Plants)
Wekiva Foliage sends three live starter plants in 2-inch pots, each a different clematis variety chosen by the grower based on current stock. The pack can include Silver Moon, Asao, Bee’s Jubilee, Jackmanii, Sweet Autumn, or dozens of other cultivars — including potential double-bloom varieties like Josephine or Belle of Woking. This is a lottery, not a curated selection, and that is the central risk.
Customer outcomes vary dramatically. One buyer in Chicago reported that all three plants grew like crazy and bloomed within 10 weeks, surviving winter despite being tiny starters. Another buyer received three non-vining, short-stature varieties (Abilene, Comtesse de Bouchaud, Flora Bijou) that produced single flowers and never climbed. The value proposition depends entirely on which stock the nursery has the day your pack is assembled.
This pack is best for adventurous gardeners who want to experiment with multiple clematis types at a single low price. If you get a double-bloom variety in the mix, great. If not, you will still learn which clematis forms your soil and sun exposure favor. For anyone who needs a guaranteed double bloom for a specific trellis location, pick a named cultivar product instead of this mystery pack.
What works
- Three plants for the price — good value for experimentation
- Sturdy seedling quality when they arrive healthy
- Potential to receive a prized double-bloom variety
What doesn’t
- Completely unpredictable — you do not choose the varieties
- Some shipments contain short non-climbing types, not double bloomers
Hardware & Specs Guide
Pot Size vs. Root Mass
Clematis are sold in pots ranging from 2.5 inches to 8 inches or quart containers. A larger pot does not always mean a larger root ball — some sellers place a 4-inch pot inside an 8-inch container to inflate perceived value. Inspect the plant immediately upon arrival. A healthy double-bloom clematis should show at least three basal shoots emerging from the crown, regardless of pot size. Fewer than three shoots means the plant was likely propagated from a single cutting, which will take years to bush out.
Hardiness Zone Matching
Most double-bloom clematis varieties are rated for USDA Zones 4 through 9. If you live in Zone 3, only cold-hardy choices like the jackmanii ‘Superba’ will reliably overwinter. If you are in Zone 10 or higher, clematis usually needs winter chill hours to set buds. Match the plant’s zone range to your local winter temperature average — not the summer zone. Pushing a Zone 4 plant into a frost-free climate leads to weak, sparse flowering.
FAQ
Why did my double-bloom clematis produce single flowers this year?
How do I tell if a clematis is truly double-bloom when buying online?
Can I grow a double-bloom clematis in a container on my balcony?
Final Thoughts: The Verdict
For most gardeners, the double bloom clematis winner is the Raymond Evison Clematis Giselle because its 8-inch container, proven sterile double genetics, and compact reblooming habit offer the highest certainty of achieving layered flowers from the first season. If you need a deep purple wall of 10-foot coverage, grab the Green Promise Farms jackmanii ‘Superba’. And for a tightly confined balcony or small trellis, nothing beats the pale elegance of the Boulevard Tranquilite Hybrid.