Dahlia Onesta
Dahlia Onesta
Dahlia Onesta
Dahlia Onesta
Dahlia Onesta
Dahlia Onesta
Dahlia Onesta
Dahlia Onesta
Dahlia Onesta
Dahlia
The dahlia has grown but very few flowers.
Elodie, 23/08/2025
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This plant carries a 6 months recovery warranty
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We guarantee the quality of our plants for a full growing cycle, and will replace at our expense any plant that fails to recover under normal climatic and planting conditions.
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Description
The 'Onesta' Decorative Dahlia forms a large camellia-like flower with good durability, whose intense dark lavender pink colour is warm and bright. The flowers are composed of numerous rows of relatively flat petals (ligules), so numerous that the centre of the flower cannot be distinguished. This modest-sized variety offers less wind resistance and will enhance flower beds with a very colourful touch.
Dahlias belong to the large Asteraceae family and are initially from the high plateaus of Mexico. Currently, the approximately 25,000 horticultural varieties obtained by humans have invaded, much to our delight, gardens worldwide. Dahlias are classified according to the shape of their heads. The 'Onesta' Dahlia is a decorative Dahlia with camellia-like flowers, also in the botanical classification of 'Arabian Nights'. The plant will reach a height of 70 cm (28in) and a width of 50 cm (20in). It has a bushy and erect habit, but its sturdy stems do not require staking. Its leaves are opposite and divided into very denticulate lobes. The leaves and stems are dark green. The flowering of this variety, if faded flowers are removed, begins in July and ends in October. The flower heads of decorative Dahlias with camellia-like flowers have wide and flattened outer ligules. The heads of the 'Onesta' variety are perfectly constructed and can reach up to 20 cm (8in) in diameter. They have a beautiful, intense medium pink colour, slightly deeper pink in the centre. The golden heart only appears late, just before fading.
'Onesta' pairs particularly well with pink and white flowers, especially the full-bodied corollas of old roses. In the background of flower beds, this Dahlia will create colourful spots with Echinaceas, Cosmos, or even Sedums and Japanese anemones. Some Pennisetum villosum add softness and delicacy to the decor. This variety is also well-suited for growing in large containers, easily embellishing the terrace or balcony.
Today, essential in gardens, Dahlias were initially cultivated in Mexico as a root vegetable. Their poor taste qualities quickly relegated them to ornamental plants. However, they are still welcome in vegetable gardens to bring some colour amidst the vegetables and increase the supply of flowers for bouquets.
Dahlia Onesta in pictures
Plant habit
Flowering
Foliage
Botanical data
Dahlia
Onesta
Asteraceae
Dahlia
Cultivar or hybrid
Planting and care
The Dahlia 'Onesta' 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, moist, and well-drained soil is 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 blood, fish and bone. Place your tuber and crumble the soil well to fill without air pockets. Your dahlia should be covered with about 6 cm (2in) of soil. At the end of planting, water once abundantly, then regularly renew this watering during the first six weeks to help with rooting. Dahlias are sensitive to cold, so they need to be overwintered. In November, the first frosts blacken the foliage, which is the time to dig them up. Carefully unearth the tubers and remove as much soil as possible. Let the foliage dry so that the tubers can replenish their reserves. Then cut the stems to 10 cm (4in). Spread your bulbs in a crate on newspaper. Store them away from frost in a dry, cool, dark place like a frost-free garage or attic. In milder regions, where there are only a few days of frost per year, it is possible to leave them in place. In this case, 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).
The flowering period indicated on our website applies to countries and regions located in USDA zone 8 (France, the United Kingdom, Ireland, the Netherlands, etc.)
It will vary according to where you live:- In zones 9 to 10 (Italy, Spain, Greece, etc.), flowering will occur about 2 to 4 weeks earlier.
- In zones 6 to 7 (Germany, Poland, Slovenia, and lower mountainous regions), flowering will be delayed by 2 to 3 weeks.
- In zone 5 (Central Europe, Scandinavia), blooming will be delayed by 3 to 5 weeks.
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 planting period indicated on our website applies to countries and regions located in USDA zone 8 (France, United Kingdom, Ireland, Netherlands).
It will vary according to where you live:
- In Mediterranean zones (Marseille, Madrid, Milan, etc.), autumn and winter are the best planting periods.
- In continental zones (Strasbourg, Munich, Vienna, etc.), delay planting by 2 to 3 weeks in spring and bring it forward by 2 to 4 weeks in autumn.
- In mountainous regions (the Alps, Pyrenees, Carpathians, etc.), it is best to plant in late spring (May-June) or late summer (August-September).
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.