perennial

Tube Clematis

Clematis heracleifolia

The Story

Plant Bio

Clematis heracleifolia is a deciduous herbaceous perennial or sub-shrub with an upright, bushy, clump-forming habit. Unlike vining clematis, it does not climb by twining petioles, instead forming woody-based crowns with strong stems.

This species produces small, fragrant, tubular to bell-shaped flowers in shades of blue to purple-blue, borne in dense clusters from late summer to early fall. Its coarsely toothed, trifoliate compound leaves resemble hogweed, and new growth emerges mid-green.

Uses & Benefits:

Ornamental UsesProduces small, fragrant, tubular blue flowers followed by fluffy, decorative seedheads.
Ecological BenefitsAttracts pollinating insects, butterflies, and hummingbirds to the garden.

Essentials

At a Glance

Plant Type

Perennial

Height

31"

Width

35"

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7, 8, 9

Water

Moderate

Humidity

Moderate

Lifespan

Perennial

Native To

Asia (central and northern/eastern China and Korea)

Toxicity

Toxic if ingested, skin irritant

Bloom period

Late summer – Early fall

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F
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M
J
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In flower about 2 months of the year

Planting

How to Grow

Pro Tip

Amateurs often treat this plant like a traditional vining clematis and try to tie it up to trellises or prune it as a woody vine, failing to realize it is a bush/sub-shrub type that flowers on current season growth and benefits from being cut down to the ground annually.

Keep It Thriving

Care Guide

Seasonal Care Calendar

TaskJanFebMarAprMayJunJulAugSepOctNovDec
Fertilize
Pest Check
Propagate
Prune

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Mass PlantingBorder EdgingSpecimen/Focal PointCottage Garden ClassicWild & Naturalistic

Multiply

Propagation Methods

Good to Know

Common Questions

Tube Clematis questions

What zones can Tube Clematis grow in?

Tube Clematis is hardy in USDA Zones 4–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

When does Tube Clematis bloom?

Tube Clematis typically blooms in late summer through early fall. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Tube Clematis need full sun?

Tube Clematis does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Keep exploring

Grow Tube 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.