Hydrangea quercifolia Harmony
Hydrangea quercifolia Harmony
Hydrangea quercifolia Harmony
Hydrangea quercifolia Harmony
Hydrangea quercifolia Harmony
Hydrangea quercifolia Harmony
Oakleaf Hydrangea, Oak-leaved Hydrangea
Disappointed with the appearance of the hydrangea, leafless and very scrawny. I hope it will develop properly.
eric, 15/10/2024
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Description
Hydrangea quercifolia Harmony is a very unique hydrangea with its oak-like leaves and its long, generous flowering with large, very compact 30 cm (11.8 in) white panicles. With its bushy habit, it is ideal for pot cultivation on balconies and terraces.
Also called Oakleaf Hydrangea, it has large deciduous and dentate dark green leaves, 30 cm (11.8 in) long, that turn a purplish red in the autumn. From August to October, pyramidal inflorescences, 30 cm (11.8 in) long and 20 cm (7.9 in) wide, form large panicles of sterile flowers in an off-white colour that turns reddish in the autumn. Hydrangea quercifolia flowers on old wood.
Hydrangea quercifolia Harmony is not very ramified and grows slowly up to 2.5 m (8 ft) in height and width. It appreciates a light, well-drained, fresh soil, in a sunny location but one that is always sheltered from cold and dry winds. Mix heath soil with your garden soil. It is a hardy shrub that is easy to grow and requires little maintenance.
Hydrangea quercifolia Harmony should be placed in the sun or partial shade. Pair it with other hydrangeas, ferns, lamiums or conifers for a beautiful contrast.
Advice: Hydrangeas do not need pruning to flower. Remove dead wood and faded flowers at the end of winter. Be careful! Hydrangea quercifolia takes a long time to reflower after hard pruning!
Hydrangea quercifolia Harmony in pictures
Plant habit
Flowering
Foliage
Planting and care
Hydrangea quercifolia Harmony is planted in spring or autumn in a fresh, humus-bearing and well-drained soil. It appreciates a semi-shaded or sunny exposure depending on the humidity of the soil. Mulch the soil with pine bark to maintain freshness and acidity. Prune the dried flowers on the young plant after frosts in order to protect future shoots. Every two years, prune one stem out of every three to rejuvenate the hydrangea. Be careful: the flowers only form on old wood! The plant's spring vegetation appears rather late.
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).
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.
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