The Story
Plant Bio
Clematis florida 'Sieboldii' is notable for its large, exotic-looking flowers and vigorous growth habit.
This cultivar features unique flowers with creamy-white sepals surrounding a large central boss of deep purple petaloid stamens, resembling a passion flower.
Uses & Benefits:
Essentials
At a Glance
Plant Type
Vine
Height
84 inches
Width
36 inches
Light
Full Sun, Partial Sun
Zones
6, 7, 8, 9, 10
Water
Regularly moist but well-drained soil
Humidity
Moderate
Lifespan
Perennial
Native To
Asia
Toxicity
Mildly toxic if ingested; can cause skin irritation.
Planting
How to Grow
- Select a well-draining, fertile soil with neutral to slightly alkaline pH.
- Tuck young plants into a sunny or partially shaded location early spring.
- Mist cuttings regularly to maintain humidity and promote rooting.
- Train vines onto a trellis or support structure as they grow.
- Water consistently, especially during dry periods, for healthy growth.
- Mulch around the base to conserve moisture and suppress weeds.
Pro Tip
Provide sturdy support early on to guide the vine's upward growth and prevent damage.
Keep It Thriving
Care Guide
Do
- Water regularly during the growing season 🌱
- Prune after flowering to maintain shape and encourage new growth
- Feed with balanced fertilizer in early spring
Don't
- Avoid overwatering in winter ❌
- Don’t prune in late fall or winter to avoid cutting off next season’s blooms
- Refrain from planting in poorly drained soil
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fertilize | ||||||||||||
| Mulch | ||||||||||||
| Plant | ||||||||||||
| Prune |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Companion Plants
Multiply
Propagation Methods
Good to Know
Common Questions
Siebold's Clematis questions
What zones can Siebold's Clematis grow in?
Siebold's Clematis is hardy in USDA Zones 6–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Siebold's Clematis deer resistant?
Yes — Siebold's Clematis is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Siebold's Clematis bloom?
Siebold's Clematis typically blooms in summer to fall through early summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Siebold's Clematis need full sun?
Siebold's Clematis does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
More Clematis to compare

Tie Dye Clematis
Clematis viticella 'Tie Dye'

Dr. Ruppel Clematis
Clematis x jackmanii 'Dr Ruppel'

Burning Love Clematis
Clematis x cartmanii 'Burning Love'

Yuan Clematis
Clematis viticella 'Yuan'

Tsukiko Clematis
Clematis x durandii 'Tsukiko'

Viva Polonia Clematis
Clematis x hybrida 'Viva Polonia'
Keep exploring
Explore the genus
Hardy in your zone?
Grow Siebold's Clematis with confidence
See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.




