Dahlia Verrones Obsidian
Dahlia Verrones Obsidian
Dahlia Verrones Obsidian
Dahlia Verrones Obsidian
Dahlia Verrones Obsidian
Dahlia Verrones Obsidian
Dahlia Verrone's Obsidian
Dahlia
This is the fourth winter in the ground. The shoots are already 10cm tall, and I hope for as many flowers as in previous years. I recommend it—very pretty flowers. A plant that can withstand temperatures as low as -10°C.
Evelyne, 03/05/2025
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This plant carries a 6 months recovery warranty
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Description
The Dahlia 'Honka Verrone's Obsidian' is a variety of star-shaped flowers from the Honka series, which stands out with remarkably contrasting flowers with a very dark colour rarely encountered in this category. Its very slender and incurved petals (with rolled edges) throughout the length are almost black, precisely a very dark purplish red. They radiate from the centre of the flower, occupied by a giant heart of golden yellow colour. This compact Dahlia produces black and slender stems adorned with emerald green foliage. An astonishing dahlia will become a focal point in the garden, in beds, borders, or even pots.
Dahlias belong to the aster family and are originally from the high plateaus of Mexico. Currently, the few 25,000 horticultural varieties obtained by humans have invaded, to our great pleasure, gardens worldwide.
The Dahlia 'Honka Black Verrone's Obsidian' is a perennial plant with swollen tuberous roots. Gathered in bundles, these tubers produce upright, hollow, and ramified stems, bearing compound, odd-pinnate leaves with rounded leaflets. The solid, fleshy stems, 60 to 70 cm (24 to 28in) tall, are topped by inflorescences called heads, 9 cm (4in) wide. The Honka series is part of the horticultural family of star-shaped Dahlias, defined by the shape of the flower.
Remove faded flowers or regularly make large colourful bouquets to promote floral regrowth by combining them with other varieties. 'Honka Black' pairs particularly well with blue flowers and silver foliage. At the front of beds, this compact Dahlia will attract all eyes, accompanied by Echinaceas or cosmos, for example, which bloom simultaneously, as well as daylilies or asters.
A star of borders and cottage gardens, Dahlias confidently accompany the most beautiful flowers but are also appreciated alongside vegetable plants. In Mexico, this tuber was first cultivated as a root vegetable for consumption. But its poor taste qualities relegated it to the status of an ornamental plant. Since then, interest in their beautiful exuberance has never waned.
Tips: When planting, consider the dimensions for the composition of your beds.
Dahlia Verrones Obsidian in pictures
Plant habit
Flowering
Foliage
Botanical data
Dahlia
Verrone's Obsidian
Asteraceae
Dahlia
Cultivar or hybrid
Planting and care
The Dahlia 'Honka Black' is easy to grow in all regions. It is good to follow a few simple rules for abundant flowering: plant the tubers in a sunny location as soon as the last frost has passed; rich, fresh, and well-drained soil is perfect. However, stagnant moisture would promote tuber rot. Do not hesitate 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 and then regularly renew this watering during the first six weeks to help with root development. Dahlias are sensitive to cold, so they need to be overwintered.
In November, the first frosts blacken the foliage; this is the 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 to 10 cm (4in). Spread your bulbs in a box of newspaper. Store them in a frost-free, dry, cool, and dark place, such as a frost-free garage or attic. In milder regions, where there are 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).
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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