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Clematis ‘Henryi’ (Early Large-Flowered Clematis)

Large-Flowered Clematis 'Henryi'

Clematis 'Henryi', Large-Flowered Clematis 'Henryi', group 2 Clematis, White Clematis, Cream Clematis, Clematis Vine, Clematis Plant, Flower Vines, Clematis Flower, Clematis Pruning

Regarded as one of the biggest white clematis, Clematis ‘Henryi’ is a large, vigorous deciduous climber with huge, luminous, pure white flowers, 6-8 in. across (15-20 cm), adorned with chocolate brown anthers. Flowering comes in two waves: first in late spring to early summer, then from midsummer to early fall. This showy large-flowered clematis is ideal for arbors, trellises, pergolas, and other garden structures. Excellent when grown into large shrubs needing summer interest.

  • Easy to grow and cultivate, this clematis thrives in moist, well-drained soils, in full sun, particularly in coastal areas and climates prone to overcast weather. Keep the roots cool and shaded by other plants or add a layer of pebbles or flat stones at the base.
  • Hardy, this clematis can quickly grow up to 9-15 ft. long (270-450 cm).
  • Deadhead after the first wave of blooms to promote new blooms.
  • This Clematis belongs to the second group of Clematis – a group including Clematis which flower in early summer on short shoots developing from the last year’s growth. Some flower again in late summer on new growth. These Clematis vines should be pruned in late winter or early spring before new growth starts and after the first flush of flowers in early summer.
  • Prune in late winter or early spring: Remove dead or weak stems before growth begins. Check individual stems from the top down until you reach a pair of healthy buds, and prune just above them, removing the spindly or damaged growth above. Avoid heavy pruning or flowers will be lost
  • Then prune again after the first flush of flowers: To encourage a second flush of flowers later in the season prune back some stems by cutting to large buds or a strong side shoot immediately below the blooms. Top-heavy or overgrown plants can be gradually reduced over two to three seasons by pruning back harder after the first flush of flowers. They are unlikely to produce a second flush of flowers but should flower again the following year, in late spring or early summer
  • Alternatively, leave clematis in this group unpruned, and then hard prune them to 30-90cm (1–3ft) from the base every three or four years in late winter (as for pruning group three). In the first year after renovation, they will only flower once.
  • Toxic to dogs, toxic to cats, toxic to horses.

As climbers, Clematis are unsurpassed in their long flowering presence, their rich diversity of flower shapes, and their wide array of colors and tolerances in terms of exposure and climate. It is no wonder they are so popular! From tree huggers to container varieties, there is a Clematis for every garden and flowers for almost every month of the year! Members of the Ranunculaceae family, they include more than 300 species and hundreds of hybrids. They create year after year a ravishing colorful show in the garden whether solely trained on walls, arbors, or trellises, or grown in association with other climbers. They are divided into 3 groups which determine how they should be pruned. Regular pruning of Clematis is important as it promotes strong growth and flowering as well as a harmonious plant. If left unpruned, Clematis can turn into a mass of tangled stems with a bare base and flowers well above eye level.

 

Clematis: How to Grow and Care with Success

Want to learn how to grow and care for clematis like a pro? Follow these simple steps and enjoy the beauty of these striking plants
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Requirements

Hardiness 4 - 11
Heat Zones 1 - 9
Climate Zones 2A, 2B, 3A, 3B, 4, 5, 6, 7, 8, 9, 10, 11, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, A2, A3
Plant Type Climbers
Plant Family Ranunculaceae
Genus Clematis
Exposure Full Sun
Season of Interest Spring (Late)
Summer (Early, Mid, Late)
Fall
Height 9' - 15'
(270cm - 4m)
Spread 3' - 4'
(90cm - 120cm)
Spacing 48" (120cm)
Maintenance Low
Water Needs Average
Soil Type Chalk, Clay, Loam, Sand
Soil pH Alkaline, Neutral
Soil Drainage Moist but Well-Drained
Characteristics Showy
Tolerance Deer, Rabbit
Attracts Butterflies, Hummingbirds, Bees
Garden Uses Arbors, Pergolas, Trellises, Beds And Borders, Wall-Side Borders, Walls And Fences
Garden Styles City and Courtyard, Coastal Garden, Informal and Cottage, Traditional Garden
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Alternative Plants to Consider

Clematis 'Betty Corning', Clematis Viticella 'Betty Corning', group 3 clematis, purple clematis, Blue clematis, lavender clematis, Viticella clematis
Clematis armandii, Armand Clematis, Clematis armandi var. biondiana, White Clematis, Evergreen Clematis, group 1 clematis, fragrant clematis, scented clematis, White clematis, disease resistant clematis
Clematis Pixie, Pixie Clematis , Evergreen Clematis, Winter Clematis, group 1 clematis, fragrant clematis, scented clematis, White clematis, disease resistant clematis
Clematis cirrhosa var. purpurascens 'Freckles', Clematis cirrhosa 'Freckles', Evergreen Clematis, Winter Clematis, group 1 clematis, fragrant clematis, scented clematis, White clematis, disease resistant clematis
Clematis x cartmanii 'Avalanche', Avalanche Clematis, Clematis 'Avalanche', Clematis Avalanche, Clematis × cartmanii 'Blaaval', Clematis 'Blaaval', White Clematis, Evergreen Clematis,
Clematis Alita, Alita Clematis, Clematis Viticella Alita, Clematis 'Evipo070', group 3 clematis, Pink clematis, Red clematis, Viticella clematis

Recommended Companion Plants

Aster Novae-Angliae 'Purple Dome', New England Aster 'Purple Dome', Michaelmas Daisy 'Purple Dome', Symphyotrichum Novae-Angliae 'Purple Dome', purple aster, violet aster
Rose 'Iceberg', Rosa 'Iceberg', Floribunda Rose 'Iceberg', Cluster Rose 'Iceberg', Rosa 'Korbin', Rosa 'Fee des Neiges', Rosa 'Schneewittchen', White roses, very fragrant roses, Shrub roses, Rose bushes, Climbing Roses, Garden Roses
Siberian Iris Ruffled Velvet growing information, Iris Siberica Ruffled Velvet growing information, Siberian flag Ruffled Velvet growing information
Veronicastrum Virginicum album, Culver's root, Veronicastrum Virginicum alba, wildflower, wild perennial, White perennial
While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.
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Requirements

Hardiness 4 - 11
Heat Zones 1 - 9
Climate Zones 2A, 2B, 3A, 3B, 4, 5, 6, 7, 8, 9, 10, 11, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, A2, A3
Plant Type Climbers
Plant Family Ranunculaceae
Genus Clematis
Exposure Full Sun
Season of Interest Spring (Late)
Summer (Early, Mid, Late)
Fall
Height 9' - 15'
(270cm - 4m)
Spread 3' - 4'
(90cm - 120cm)
Spacing 48" (120cm)
Maintenance Low
Water Needs Average
Soil Type Chalk, Clay, Loam, Sand
Soil pH Alkaline, Neutral
Soil Drainage Moist but Well-Drained
Characteristics Showy
Tolerance Deer, Rabbit
Attracts Butterflies, Hummingbirds, Bees
Garden Uses Arbors, Pergolas, Trellises, Beds And Borders, Wall-Side Borders, Walls And Fences
Garden Styles City and Courtyard, Coastal Garden, Informal and Cottage, Traditional Garden
How Many Plants
Do I Need?
Learn Now
Explore Great Plant Combination Ideas
Clematis
Guides with
Clematis
Not sure which Clematis to pick?
Compare Now

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