North America Non-native Plant

Clematis Henryi

Botanical name: Clematis henryi

USDA symbol: CLHE6

Native status: Not native but doesn't reproduce and persist in the wild

Clematis henryi: A Stunning Chinese Climbing Vine for Your Garden If you’re looking for a show-stopping climbing vine that produces dinner-plate-sized white flowers, Clematis henryi might just be the plant you’ve been searching for. This elegant climber brings a touch of exotic beauty to any garden with its spectacular blooms ...

Clematis henryi: A Stunning Chinese Climbing Vine for Your Garden

If you’re looking for a show-stopping climbing vine that produces dinner-plate-sized white flowers, Clematis henryi might just be the plant you’ve been searching for. This elegant climber brings a touch of exotic beauty to any garden with its spectacular blooms and vigorous growth habit.

What Makes Clematis henryi Special

Clematis henryi is a deciduous climbing vine native to central and western China. While it doesn’t have widely recognized common names in English, gardeners often simply call it Henry’s clematis after its botanical designation. This stunning climber can reach heights of 8-12 feet, making it perfect for adding vertical interest to your landscape.

The real showstopper is its flowers – massive creamy-white blooms that can stretch 6-8 inches across, each adorned with prominent dark stamens that create a striking contrast. These beauties appear from late spring through early fall, providing months of garden drama.

Where Does It Come From?

This clematis species hails from the mountainous regions of central and western China, where it grows naturally in woodland environments. As a non-native plant in North American gardens, it’s important to consider native alternatives like Virgin’s Bower (Clematis virginiana) or Rock Clematis (Clematis columbiana) if you’re focused on supporting local ecosystems.

Garden Design and Landscape Role

Clematis henryi shines as a focal point vine that can transform ordinary garden structures into stunning displays. Here’s where it works best:

  • Training over pergolas and arbors for overhead beauty
  • Climbing up sturdy trellises against walls or fences
  • Weaving through existing shrubs and small trees
  • Adding vertical drama to cottage gardens and mixed borders
  • Creating privacy screens when grown on appropriate supports

Growing Conditions and Care

Like most clematis, this Chinese beauty has some specific preferences that will keep it happy and blooming prolifically:

Light Requirements: Clematis henryi thrives in locations with morning sun and afternoon shade, or dappled sunlight throughout the day. Too much intense afternoon sun can fade those gorgeous white flowers.

Soil Needs: Well-draining soil is crucial – soggy roots spell disaster for clematis. Aim for slightly alkaline to neutral pH, and enrich heavy clay soils with compost for better drainage.

The Cool Root Rule: Here’s a quirky clematis fact – they love having their feet cool and their heads in the sun. Mulch around the base or plant low-growing perennials nearby to shade the root zone.

Hardiness and Planting Tips

This clematis is quite cold-hardy, thriving in USDA zones 4-8. When planting, dig your hole about twice as wide as the root ball and plant the crown (where stems meet roots) about 2-3 inches below the soil surface. This deeper planting helps protect against clematis wilt and encourages strong root development.

Provide sturdy support from day one – these vines can get quite hefty when mature, and those large flowers add extra weight when wet.

Pruning and Maintenance

Clematis henryi belongs to pruning group 2 (also called group B), which means it blooms on both old and new wood. Prune lightly in late winter or early spring, removing any dead or weak stems and cutting back healthy stems to the first pair of strong buds. Avoid heavy pruning unless absolutely necessary, as you’ll sacrifice early-season blooms.

Wildlife and Pollinator Benefits

Those large, open flowers aren’t just pretty to look at – they’re magnets for bees, butterflies, and other beneficial insects. The abundant pollen and easily accessible flower structure make this clematis a valuable food source during its long blooming period.

Is Clematis henryi Right for Your Garden?

Consider growing this beautiful climber if you:

  • Want spectacular large white flowers for months
  • Have sturdy support structures available
  • Enjoy the challenge of growing something a bit different
  • Live in zones 4-8 with appropriate growing conditions

However, if your primary goal is supporting native wildlife and ecosystems, consider native clematis alternatives first. Many regions have beautiful native climbing vines that provide similar vertical interest while supporting local pollinators and birds more effectively.

With proper care and the right growing conditions, Clematis henryi can be a stunning addition to your garden, offering years of dramatic floral displays and vertical beauty. Just remember to keep those roots cool and provide something sturdy for this vigorous climber to scale!

Clematis Henryi

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Magnoliidae

Order

Ranunculales

Family

Ranunculaceae Juss. - Buttercup family

Genus

Clematis L. - leather flower

Species

Clematis henryi Oliv.

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA