vine

Siebold's Clematis

Clematis florida 'Sieboldii'

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:

Ornamental UsesElegant climber with fragrant flowers enhances vertical spaces and adds visual interest.
Practical UsesProvides shade and privacy when trained on trellises or fences.
Ecological BenefitsSupports pollinators like bees and butterflies with nectar-rich blooms.
SpeciesClematis floridaFlorida Clematis

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

  1. Select a well-draining, fertile soil with neutral to slightly alkaline pH.
  2. Tuck young plants into a sunny or partially shaded location early spring.
  3. Mist cuttings regularly to maintain humidity and promote rooting.
  4. Train vines onto a trellis or support structure as they grow.
  5. Water consistently, especially during dry periods, for healthy growth.
  6. 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

TaskJanFebMarAprMayJunJulAugSepOctNovDec
Fertilize
Mulch
Plant
Prune

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Vining wall covering with lush green foliageDecorative garden trellis displayShade provider for outdoor seating areas

Companion Plants

HostaDaylilies Lavender Ferns Japanese maple

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.

Keep exploring

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.