Clematis diversifolia Hudson River ®ZO 06137
Clematis diversifolia Hudson River ®ZO 06137
Clematis diversifolia Hudson River ®ZO 06137
Clematis diversifolia Hudson River ®ZO 06137
Clematis diversifolia Hudson River ®ZO 06137
Vigorous plant with fast growth, covered in floral buds, very beautiful blue flowers.
Jérôme, 01/06/2023
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Description
The Hudson River Clematis diversifolia will captivate the hearts of flower enthusiasts with its blue blooms from June to September. This recent Dutch hybrid is a delightful small semi-climbing plant that forms a somewhat bushy mass when allowed to grow freely. Its herbaceous stems bear single star-shaped flowers that gracefully curve. They are a deep blue-violet, with intensity highlighted by a beautiful cluster of light stamens. This variety of modest size thrives on old walls, trellises, fences, as well as ground cover at the base of trees. Its numerous voluble stems allow it to climb anywhere, as long as it can use its tendrils! Ideal when paired with a bush, in a container or not.
Clematis belong to the Ranunculaceae family. 'Hudson River' is a recent cultivar obtained in the Netherlands and introduced to the market in 2015. This plant is derived from Clematis diversifolia, a hybrid between C.integrifolia and various forms of C.viticella. It is a perennial herbaceous climbing plant that reaches a height of 1.50m (5ft), with a spread of 90 cm (35in) to 1m (3ft). Deciduous, it completely dries out every winter and regrows numerous stems from its stump in spring.
The flowers measure 5 to 8 cm (2 to 3in) in diameter, appearing on the year's shoots from the month of June to September, either solitary or grouped in clusters. These curious bell-shaped flowers are actually tubes made up of 4 sepals fused together at the base, quickly separating into four distinct, elongated, slightly upturned, deeply veined elements. They have a particularly deep indigo-blue to violet-blue hue. The flowering is followed by feathery fruits that persist until winter, which are decorative and silver-gray. The leaves, sometimes glabrous, are single and entire, lanceolate to cordate, fairly dark green. This clematis climbs using tendrils formed from transformed petioles.
The 'Hudson River' Clematis can be used as a perennial plant in rock gardens and mixed borders. It will be perfect for free use as a garland or in the branches of a late-flowering bush (lilac, mock orange, deutzia). It will also adorn balconies, as it thrives in containers where, like in the garden, it should be trained on a trellis. Pair it in the garden or in homemade bouquets with shrub roses or other pastel blooms, allowing you to create very romantic arrangements.
Clematis diversifolia Hudson River ®ZO 06137 in pictures
Plant habit
Flowering
Foliage
Botanical data
Clematis
diversifolia
Hudson River ®ZO 06137
Ranunculaceae
Cultivar or hybrid
Planting and care
The diversifolia 'Hudson River' Clematis loves sunny exposures. As it blooms on the current year's branches, its vegetation should be pruned to 10 cm (4in) above the ground, above a nice pair of buds, at the end of winter (March), before the start of vegetation. Plant it in fertile, humus-rich, and well-drained soil, shading the roots and the base of the stem (with a flat tile, for example). Herbaceous species prefer full sun, but these plants like to keep their feet cool. However, they wilt in overly wet soil, so ensure good drainage. Plant your Clematis by covering the root ball with 3 cm (1in) of soil, in soil worked to a depth of 20 cm (8in), lightened with good compost and coarse sand. Water regularly during the first few weeks. Mulch all Clematis in February with garden compost or well-decomposed manure, avoiding direct contact with the stems. Cover the base of climbing Clematis with a small mound of soil, reducing the risk of wilting while promoting the growth of vigorous shoots from the stump.
After planting, cut back the stems of deciduous Clematis to about 20 cm (8in) above the base, above a nice pair of buds. We advise you not to overwater in winter, as stagnant water can cause fungus to develop at the neck. Train the stems, without squeezing them, until the plant can climb by itself.
Clematis also enjoys growing freely on neighboring plants. Voles and grey worms can attack Clematis and devour the stems. Aphids and greenhouse whiteflies are also potential parasites of Clematis.
Planting period
Intended location
Care
Planting & care advice
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Hardiness is the lowest winter temperature a plant can endure without suffering serious damage or even dying. However, hardiness is affected by location (a sheltered area, such as a patio), protection (winter cover) and soil type (hardiness is improved by well-drained soil).
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In temperate climates, pruning of spring-flowering shrubs (forsythia, spireas, etc.) should be done just after flowering.
Pruning of summer-flowering shrubs (Indian Lilac, Perovskia, etc.) can be done in winter or spring.
In cold regions as well as with frost-sensitive plants, avoid pruning too early when severe frosts may still occur.
The harvesting period indicated on our website applies to countries and regions in USDA zone 8 (France, England, Ireland, the Netherlands).
In colder areas (Scandinavia, Poland, Austria...) fruit and vegetable harvests are likely to be delayed by 3-4 weeks.
In warmer areas (Italy, Spain, Greece, etc.), harvesting will probably take place earlier, depending on weather conditions.
The sowing periods indicated on our website apply to countries and regions within USDA Zone 8 (France, UK, Ireland, Netherlands).
In colder areas (Scandinavia, Poland, Austria...), delay any outdoor sowing by 3-4 weeks, or sow under glass.
In warmer climes (Italy, Spain, Greece, etc.), bring outdoor sowing forward by a few weeks.
The planting period indicated on our website applies to regions in USDA Zone 9a (East Coast and Midlands: Dublin, Wexford, Waterford, Kilkenny, Portlaoise). It will vary depending on where you live:
- On the west coast and in the north-west (Galway, Limerick, Sligo, Donegal, Westport), delay planting by 1 to 2 weeks in spring and bring it forward by 1 to 2 weeks in autumn compared to the dates given, preferably choosing periods without strong winds.
- In the inland hills and plateaus (Wicklow Mountains, Macgillycuddy’s Reeks, Connemara, Killarney), it is best to plant in spring (April–May) or autumn (September–October), avoiding periods of waterlogged soil in winter and strong winds, which pose the main risk to newly planted trees in these areas.
The flowering period indicated on our website applies to regions in USDA Zone 9a, such as the East Coast and Midlands, including Dublin, Wexford, Waterford, Kilkenny and Portlaoise.
This will vary depending on where you live:
- On the west coast and in the northwest (Galway, Limerick, Sligo, Donegal and Westport), it will be delayed by one to two weeks compared to the given dates, due to stronger Atlantic winds and less spring sunshine.
- In the inland hills and plateaus (the Wicklow Mountains, the Macgillycuddy's Reeks, Connemara and Killarney), flowering will be delayed by two to three weeks. Flowering mainly occurs between May and July, with the limiting factors being less frost and more of the excessive humidity, strong winds and lack of sunshine that are characteristic of these areas.