Dahlia Summer Haze
Dahlia Summer Haze
Dahlia Summer Haze
Dahlia Summer Haze
Dahlia
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Description
The Dahlia 'Summer Haze' is a brand new variety of ball dahlia, with medium-sized pompom-shaped flowers in a beautiful harmony of warm and soft colours including yellow, salmon orange, and magenta-purple. Its flowers are precisely organised in countless tubes, with the inner ones revealing a purple reverse. The plant, of modest stature, blooms abundantly from summer to frost on long purple stems, looking impeccable in bouquets as well as in flower beds.
Dahlias belong to the Asteraceae family and are originally from the high plateaus of Mexico. They bear inflorescences in heads, commonly referred to as 'flowers' though they carry many smaller flowers. At present, the roughly 25,000 horticultural varieties obtained by humans have invaded gardens worldwide, much to our delight. The 'Summer Haze' variety, still unavailable in the horticultural trade, will measure approximately 70-80 cm (28-32in) in height and 50-60 cm (20-24in) in diameter after 3 to 4 months of cultivation. It is classified as a decorative dahlia of the Ball flower type. In this category, the heads are without a visible central disc and are composed of numerous regularly arranged and completely rolled up petals (ligules) that are tubular and do not flare out. This includes varieties that form true spheres, such as pompoms (with a diameter of less than 6 cm (2in)) and balls (with a diameter of more than 6 cm (2in)). The heads of this 'Summer Haze' variety generally measure 9-10 cm (4in) in diameter. The ligules are initially yellow on the outside and gradually turn to a soft salmon-orange. The centre of the head is occupied by ligules with a purple-magenta reverse, creating a beautiful contrast of colours. The plant has an erect habit, and its stems usually do not require staking. The flowering of this variety begins in July and ends in October-November, if faded flowers are regularly removed or used in bouquets. The habit is bushy and upright. The highly branched, long and sturdy stems are hollow, and the leaves are opposite, pinnately divided into 3 or 5 very toothed lobes. The leaves are dark green here, and the stems are reddish.
To encourage repeat flowering, make sure to remove faded flowers, or even better, regularly make large colourful bouquets by combining it with other varieties. 'Summer Haze' produces beautiful flowers in bouquets, alongside single or pompom varieties in white, orange, or even purple. This variety stands out beautifully against the bronze or purple foliage of fennel or the acidic green of lady's mantle. In flower beds, this cheerful dahlia will create highly colourful spots alongside grasses like crested wheatgrass and asters cordifolius ('Little Carlow'), for example, which bloom at the same time. Its long, highly flowered stems allow for the addition of bouquets late in the season.
As a star plant in borders and herb gardens, dahlias confidently accompany the most beautiful flowers but are also appreciated alongside vegetable plants. In Mexico, this tuberous plant was initially cultivated as a root vegetable for consumption. However, its poor taste qualities relegated it to the status of an ornamental plant. The dahlia, with its infinite variety of shapes and colours, is now considered one of the most beautiful flowers in the garden.
Dahlia Summer Haze in pictures
Plant habit
Flowering
Foliage
Botanical data
Dahlia
Summer Haze
Asteraceae
Dahlia
Cultivar or hybrid
Planting and care
The Dahlia 'Summer Haze' is easy to grow in all regions. For abundant flowering, it is good to follow a few simple rules, plant the tubers in a sunny location as soon as the last frost has passed, rich, fresh, and well-drained soils are perfect. However, stagnant moisture would promote tuber rot. Feel free to amend the soil with compost and sand if necessary. Work the soil deeply and enrich it, for example, with crushed horn or dehydrated blood. Place your tuber and crumble the soil well to fill the hole without air pockets. Your dahlia should be covered with about 6 cm (2in) of soil. At the end of planting, water abundantly once and then regularly for the first 6 weeks to help with rooting.
Dahlias are sensitive to cold, they need to be overwintered under shelter. In November, the first frosts blacken the foliage, so it is time to dig them up. Carefully unearth the tubers. Remove as much soil as possible. Let the foliage dry so that the tubers can replenish their reserves. Then cut the stems down to 10 cm (4in). Spread your bulbs in a crate on newspaper. Store them protected from frost in a dry, cool, and dark place, such as a frost-free garage or an attic. In the southern regions, close to the coast, where there are few frosty days per year, it is possible to leave them in place. In this case, simply cover the ground with a layer of leaves or straw for protection.
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.